* Posts by Kevin McMurtrie

985 posts • joined 15 Jun 2007

Some like it hot ... very hot: How to use heat to your advantage in your data center

Kevin McMurtrie
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Re: Data centers can be run much warmer

The efficiency of a datacenter is calculated as computational power per cost. Extra cooling makes that ratio worse and it's for nothing. Why would you want to extend the life of a system from 5 years to 20 years with extra cooling? Old systems use more power and space than they're worth.

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Google takedown requests mushroom as copyright holders play whack-a-mole

Kevin McMurtrie
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Good News

No how do I take down all the "John David" GMail accounts?

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From $6bn to $4.2bn to $2.9bn: Square's ever shrinking unicorn horn

Kevin McMurtrie
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Bubble 2.0

Bubble 1.0 was about pumping up the stock price with fraudulent claims of revenue and productivity, often from empty offices. The Securities and Exchange Commission won't be fooled by that trick again. Bubble 2.0 is scaring crusty old software companies into believing that they have one foot in the grave and new startups are taking over. Bubble 2.0 grows because the premise is true yet it will pop because spending billions to buy startups is an expensive way of feeding your disease.

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Apple – it's true: iPad Pro slabs freeze when plugged in to charge

Kevin McMurtrie
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Can-do

This will get the usual modern electronics solution: Fix it in software no matter what. Use software even if it means saving the internal state to flash memory when you plug it in and rigging up some other chip to power cycle the board when the main CPU stops. Tell customers to that the device is becoming obsolete and it's time to buy a newer one that works better.

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Microsoft chief Satya drops an S bomb in Windows 10, cloud talk

Kevin McMurtrie
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The new Web: Security is not letting anyone else have the creepy personal information that you've worked so hard to collect.

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Apple's Faulty Powers moment: iPad Pro slabs 'temporarily bricked' during recharge

Kevin McMurtrie
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Theft

They stole the Oppo Find 7 firmware!

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Hold on, France and Russia. Anonymous is here to kick ISIS butt

Kevin McMurtrie
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Mushroom

Re: Cloudflare's CEO is right about one thing

You're wrong in implying that it's OK to assist in illegal activity until a court order arrives. Businesses are obligated, by law, to know what they're doing. That closes a loophole where there's a massive asymmetry between initiating the crime and shutting down the crime - millions of dollars and thousands of man-hours to produce and enforce a court order every time a criminal runs a script to set up shop.

CloudFlare knowingly hosts phishing sites with fraudulent accreditation and certification badges. They knowingly host CAN-SPAM violators. They know they are hosting illegal telemarketers. They knowingly host sites making illegal calls for violence. The even blog about how they are assisting illegal activities with the stupid defense that somebody else will if they don't. For all the trouble I've had with their scammers, I won't shed a tear if lots of black trucks arrive and their whole operation and a few executives vanish.

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California cops pull over Google car for driving too SLOWLY

Kevin McMurtrie
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Re: What's funny...

"One thing I don't quite understand is what Google get out of this project."

Are you kidding? The same thing Google does with their search engine: Knowing where you've been, where you are, what you might want, and then taking you to paid results. You get in the car and say, "I want a burger." It offers to take you to whatever local restaurants are paying for hits on burger searches. On the way home it mentions that some stores are having sales and offers to take you there too. Money, money, money.

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Kevin McMurtrie
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They're making right turns from the left side of the road. Cyclists get cut off and other cars get blocked.

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Kevin McMurtrie
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Googlers are, by far, the biggest collection of asshole and incapable drivers I've ever witnessed in the US. Their self driving cars have unfortunately inherited some of those traits. The reason for them not officially being at fault in a crash is because each one exists inside its own low speed traffic jam bubble. Here's where you can witness the self-driving cars screwing up every weekday around 5 - 6 pm: Plymouth St and N Shoreline Blvd - Self driving cars can not pass through stopped traffic yielding at an intersection. W Middlefield Rd at N Shoreline Blvd - Self driving cars make illegal wide right turns across bike lane.

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Most developers have never seen a successful project

Kevin McMurtrie
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<ding> <dong> Do you have a monent?

It's only a matter of time before Agile evangelists start going door to door to pass out literature in support of their local scrum master and Tuesday morning standup. They're preaching the same doom, gloom, and salvation story as traditional profiteers of religion. This abuse is a shame because Agile is useful when applied in moderation to the right kinds of projects. Absolute, unquestioning faith in any process is a sure way to go out of business. ("Can Jesus make a rock so big he can not lift it?" == "Can a company be so Agile that it can not adapt to new methodologies?")

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Apple's OS X App Store downloads knackered by expired security cert

Kevin McMurtrie
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Re: This is why the....

This happened to DIVX video discs when DRM owner Circuit City failed. It happens when DRM controlled electronics are given a forced update and the DRM controlled media/app is no longer compatible. Anyone using permissions based DRM should be forced to call it a lease or a long-term rental rather than a purchase. I believe this is a large driving force behind the race to the bottom in online purchases. The price that I will accept for DRM purchases is based on my expectations of a 3 month lifespan.

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Boffins teach Wi-Fi routers to dance to the same tune

Kevin McMurtrie
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I thought 5 GHz was the solution to urban congestion by having lots of channels and poor penetration. I've never seen it get too crowded and I've never seen it travel through more than 3 walls.

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Roamers rejoice! Google Maps gets offline regional navigation

Kevin McMurtrie
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Re: But then how will they track you

It will definitely be time to worry about offline tracking if Google changes their mind about storage cards.

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So. Farewell then Betamax. We always liked you better than VHS anyway

Kevin McMurtrie
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Re: Can we finally settle this?

Lightness, chroma, and sync are encoded with different frequencies, response curves, and emphasis. There is noise and dropout masking because the tape signal is quite dirty. Later models encode a stereo signal into the drum head too. I'm not sure why, but there are always pots for tuning the horizontal and vertical alignment between even and odd frames.

I just took apart a Betamax to help digitize some tapes. It has one large control board, two large analog processing boards, an RF daughter card, some small servo boards, and a speaker driver board. Most of the boards have all wires exiting on the same side so that you can put the player on its side and fan out the boards like an open book. I honestly don't know why it drives speakers. That was a mystery even when it was "state of the art."

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Kevin McMurtrie
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Re: Can we finally settle this?

For image quality - absolutely. Betamax was comparable broadcast quality on a 19" TV while VHS looked smeared and had almost no color resolution.

The opposite may true of mechanical quality. The Betamax tape path wraps almost completely around the drum head from one side, snaking through many polished pins and rollers. It would damage tapes with even the slightest misalignment and getting all those parts cleaned and calibrated for a good picture was pure magic. Players had slack sensors and multiple drive systems to regulate tension. Tracking was always fussy. Fast-forward and rewind were slow because the tape either had to unwrap and rewrap or it had to travel slowly enough to not fly off the path.

VHS pulled the tape straight out and pushed it against part of the drum head. The reduced contact path gave VHS a lousy picture but simplified mechanics.

Both systems needed fancy computers to convert encoded video signals that were at different resolutions between tape and TV. Early models literally had stacks of analog computer circuit boards filling those bulky boxes.

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ProtonMail DDoS wipeout: Day 6. Yes, we're still under attack

Kevin McMurtrie
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Mushroom

Name and shame

Sort those IP addresses, do the lookups, start naming hosting providers, and start building blacklists. Call BS on every network that claims they're too important to need an abuse response team. I bet the blacklist attenuates the attack very well with only a handful of networks placed in it. It doesn't catch any hackers but it takes their toys away.

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Stick a pin in a sales droid to avoid cable voodoo

Kevin McMurtrie
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Apple ][

It was indeed a stepper motor in the Apple ][ floppy drive. Head movement came from a spiral grove on a cheap plastic disk rather than the usual metal screw. The clacky-clacky-clacky boot sound was the calibration procedure - spin downward for a long time and let the needle skip. Track positioning and sector alignment was all performed in crude software so it needed massive physical padding. Spindle drive was your average cassette tape player motor - brushed motor and a simple negative resistance circuit to regulate speed. There was also the legendary bug where sector interleaving was wrong, resulting in throughput of about one sector per revolution. All this is why there were hacker DOSes that ran 8x faster and sometimes boosted floppy storage.

The Apple ][ was obscenely crude, lazy, and overpriced. Everything was a cool trick that wasn't quite right. It was endless educational fun for recreational hacking but excruciating for business software.

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Google engineer names and shames dodgy USB Type-C cable makers

Kevin McMurtrie
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Re: Er....

There's a specification for dumb chargers where the data lines are shorted together and current is negotiated by monitoring voltage droop. Despite some warnings that exceeding 1 amp may not be a good idea, many chargers provide 4 to 5 amps. USB 1 and 2 data devices are limited to ~1 amp because you don't want the power lines to have less voltage than the data lines.

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Kevin McMurtrie
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Boffin

Er....

Old USB allows up to 5A for chargers. With such a low voltage used, it's difficult for there to be more than 2.5 W of losses before the power consumer no longer has enough voltage to function. 2.5 W lost across the length of a wimpy cable won't generate much heat. 0.5 W lost in a heavy cable with 2 W lost at a spot of fraying sill won't generate much heat due to good thermal conduction.

I could be reading the spec wrong, but it doesn't look like the resistor needs to be there except to possibly improve efficiency. USB-C high voltage mode needs a data handshake.

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Music lovers move to block Phil Collins' rebirth

Kevin McMurtrie
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Re: Gated reverb is luvverly (especially with a bit of reverse)

The 80's also had a good level of dynamic range compression that helped give it that sharp and clean sound. Amplitude was often too choppy in the 60s while today it's puréed droning.

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Alumina in glass could stop smartphones cracking up

Kevin McMurtrie
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Flame

2000 °C Oxygen

Pretty much everything except glass does this in 2000 °C oxygen -->

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Wireless charging desks are coming

Kevin McMurtrie
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Meh

Engaging new paradigm of synergistic integration

I don't want to register my desk to activate it, spend hours tracking down desk malfunctions, receive e-mails about new desk opportunities, view personalized content related to my choice of desk, become park of an online desk community, enter a walled garden of compatible surface objects, plug my desk into an outlet, or upgrade my desk every two years. Do not integrate tech into to my desk.

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SeaMeWe-3 submarine cable spur borked until November 10th

Kevin McMurtrie
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You might notice that your tinfoil hat is heavier than usual and has some small protruding wires. It's nothing to worry about. A figure in black suit sat on it by accident, felt sorry, and made some repairs.

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Seagate unveils enlarged spy drive with support for 64 spycams

Kevin McMurtrie
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I can see bandits defeating a heavily loaded surveillance system by dressing up as large swaying bushes to raise the H.264 bitrate.

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Smartphone boutique OnePlus reveals another model you can’t get

Kevin McMurtrie
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Thumb Up

On to something

These ceramic cases could be a big deal if OPO/OPPO can work out the manufacturing issues. Aluminum needs to be sliced up to pass RF, glass can't handle impacts, and reinforced plastics flex too much. Too there aren't enough LTE bands on that phone.

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DEFCON 1 to DEFCON GONE: One of NORAD's spy blimps goes missing

Kevin McMurtrie
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WTF?

It was an "accident"

After reading the specifications, the mission, and what it looks like. Yeah, accident.

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Apple: We're going to sell $77bn worth of iStuff this holiday season

Kevin McMurtrie
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Never buy a telco branded phone - they're custom OS builds that don't get updates. Buy the OEM version.

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Kevin McMurtrie
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iWhat?

What's the hot iDevice? Fanatics in the Apple ecosystem probably already have the late model iPhone, iPad, Watch, or Mac that they want. Recent upgrades have been minor technical bumps and more iOS/OSX convergence - nothing to stand in line for. That leaves the Apple TV as hot a gift item, and I don't see it racking up $77,000,000,000 in sales for Q4. Maybe five or six Apple pencils will sell too.

Surely Apple will personally follow up with The Reg to provide details.

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IoT's sub-GHz 802.11ah Wi-Fi will be dead on arrival, warn analysts

Kevin McMurtrie
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Junk drawer chipset?

Why the worry to combine all of the WiFi protocols into one box? The access point could be a little box with a 10/100 Mbps PoE jack and a simple web interface to set power levels and authentication. The typical "WiFi VPN Firewall Router with dual WAN, dual USB, and 4 port switch" monstrosity is already so complicated that most people don't have them working correctly.

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Bosch, you suck! Dyson says VW pal cheated in vacuum cleaner tests

Kevin McMurtrie
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Meh

Aw, poor Dyson

Maybe Dyson is upset because those centrifuges and layers of filters result in an incredibly power hungry vacuum cleaner that doesn't move much air, regardless of how fancy the motor is. On the positive side, a Dyson consumes less power when those filters that never clog or need changing become clogged or need changing.

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ITU rubber-stamps '3D' audio format

Kevin McMurtrie
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WTF?

The new spec looks awful. Like the old QuickTime/MP4 container, it requires two passes to assemble so it can not be streamed live. It's not clear why they bothered with broadcast metadata. I also saw no mention of compression, phasing/placement metadata, and all that good stuff needed for high quality surround sound to work. Their sample has two tracks of PCM stereo plus six tracks of PCM 5.1. Ouch. That's not how 5.1 works.

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Sprint sprints away from no-throttle policy – punishes 'unlimited' network hoggers

Kevin McMurtrie
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Wow

I'm impressed that some parts of Sprint are fast enough that anyone could hit 23 GB in a month.

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Ad networks promise to do something about the awful adverts you're all blocking, like, real soon

Kevin McMurtrie
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The very worst part is that people still somehow manage to make purchases without seeing ads. It's almost as if they weren't even... No, that can't be!

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You can hack a PC just by looking at it, say 3M and HP

Kevin McMurtrie
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Meh

The 1980s called; wants to sell you a pocket TV

Early models of LCDs did this naturally and it was extremely costly to fix until recently. Maybe somebody found a huge stash of old screens after buying the Palm campus.

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Is streaming pirate video legal? Europe's highest court will take a look

Kevin McMurtrie
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Coat

Sure, 'Pan' got terrible reviews and the "Pirates of the Caribbean" series seems to be forever undead, but I don't think pirate video needs to be illegal.

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Laser razor binned from Kickstarter resurfaces on Indiegogo

Kevin McMurtrie
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Please clean every ten whiskers

Part of the physics behind this razor are sound. You constrain a medium power laser within a light pipe using total internal reflection. As soon as a whisker contacts the light pipe, the laser will leak out and burn the whisker away. A smart circuit could vary laser power so that it's only running on high when the light is leaking.

Now for the bad part: A dirty light pipe doesn't work. Every bad cook knows that burned proteins and oils stick to anything, and more heat makes it worse. I doubt anyone has yet invented a tiny light pipe that will keep itself clean without lots of smoke, burned skin, and maintenance.

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Android users left at risk... and it's not even THEIR FAULT this time!

Kevin McMurtrie
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Re: Cambridge boffins

There's more to malware than botnets and lost files. Much of what's in Google Play Store is garbage of some kind trying to get easy ad revenue. You might think you're clean, but you might have a few impostor apps that do exactly what you expect but send ad revenue to a different developer. Or maybe they collect a bit of extra information of extra value. Lots of apps even have Google Play Store reviews with proof that they're malware.

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Pitchforks, torches, and awful quotes – we read what Cisco's CEO said

Kevin McMurtrie
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Coat

Why did everyone bring a box to work?

The death of a big company: Management keeps getting bigger and bigger, processes get heavier and heavier, more accidents happen in the rush to maintain productivity, new processes are continuously added to prevent old accidents from happening again, no more real work can get done, and the chain of managers pushes down a mandate for everyone to work harder.

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Who gets Teslas made and throws Apple shade? It's… MUSK!

Kevin McMurtrie
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It's all a show to keep the team players happy. Maybe Musk has been hanging with Legere.

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Talk revealing p0wnable surveillance cams pulled after legal threat

Kevin McMurtrie
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Not so many, really

There really aren't very many cameras sold on Amazon. Most of them are the same handful of cameras rebranded over and and over. Even companies that you'd expect to actually make cameras are sticking their label on something else.

This turned out to be extremely frustrating when I was looking for a security camera. Those few cameras have completely garbage firmware running under a patchwork of open source Linux software that somebody likely found on a sketchy FTP site 10 years ago. I'd open the box of a brand new camera and realize it was the same as the old camera. Default login won't stay off, pages not checking authentication, and much easier to crash than to keep running. I eventually started asking companies to send me sample videos so I could compare headers.

I'm guessing that TRENDnet was the vendor that said they have no idea what to do. Their TV-IP310PI is a defective Hikvision camera that they can't support. Other models may be similar.

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Ad-slinging rootkit nasty permanently drills into Android mobes, tabs

Kevin McMurtrie
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FAIL

Google Play Store is a malware wasteland

I consider it great luck when I find something in Google's Play Store that isn't malware. Google doesn't take abuse reports seriously, if at all, and they still require G+ signup to rate apps. The author of the software might have good intentions but it's hooked up to an ad service that hijacks the app. First launch shows "This application needs an update for media library v2" or "This application is no longer supported. Please use the current version." then starts installing more crap if you don't decline or uninstall. That's followed by endless half-assed phishing ads like "This iPhone is infected. Click here to repair."

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Verizon now owns AOL, so AOL now owns your web browsing habits, other personal info

Kevin McMurtrie
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Terminator

Remember the good old days when humans were customers rather than marketing targets?

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Chocolate Factory plops Marshmallow on Android slabs

Kevin McMurtrie
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Re: Google has also sought to make the Google Now virtual assistant more prevalent with Marshmallow

Google is the new evil carrier that throws gigabytes of battery draining shovelware onto your phone. I wouldn't recommend their customized OS any more than one from a telco. Third party AOSP builds are nicely trimmed down.

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Rackspace turns into a fanatical AWS cloud-flinger

Kevin McMurtrie
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Mushroom

Spammed lightning

Is this to streamline creating those spams that redirect through Cake Marketing/Rackspace then land on an Amazon hosted phishing site? It looks like it was a lot of effort to create them yet I get many per week. The next product can sell templates for the usual fake store fronts - pharmacy, company, solar installer, courthouse, package delivery, photo sharing, etc.

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Like your job at Sprint? Yeah, about that ... $2.5bn in cuts coming

Kevin McMurtrie
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Mushroom

Re: Customer Disservice

Service was always prompt for me. I'd bring the phone to their store with a problem and then they'd return it minutes later saying, "We erased everything and did a factory reset so it's probably fixed now. Bring it in again if it has more problems." I bet they proudly displayed statistics showing that people rarely returned with a problem after the first service.

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Boeing builds British Airways 787 Dreamliner in 4 minutes

Kevin McMurtrie
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Thumb Up

Re: Nice video.

Good catch! The back side of the tail wasn't blurred to match the low quality camera and the mask is slightly misaligned.

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Tegile thrashes rivals in race to supply vomit-free krill pills seller

Kevin McMurtrie
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Re: Biiiiiig data

Marketing-centric retail is hard. They likely very prices for each item based on many static and dynamic factors. That results in an enormous and ever-growing hidden catalog to support a consistent experience each customer. They'd also be recording as much tracking data as possible for "customer retention" programs and marketing pattern analysis. Throw on top of that millions of single-use coupons, reusable promo codes, customer-to-customer recommendations, gift cards, billing information, and hopefully some fat crypto. Now it's getting to be a big database.

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Microsoft and Google ink SECRET TREATY to end all their patent wars

Kevin McMurtrie
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Oracle

So what does Oracle, owner and destroyer of Java, think of this? Anyone checked the height of Larry's fountain at HQ?

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Want cheaper AT&T gigabit service? Move to a Google Fiber city

Kevin McMurtrie
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Meh

Checking my Silicon Valley address...

Across the street from new LinkedIn, Apple, and Google campuses, AT&T is offering 3 Mbps to compete with Comcast's 0 to 150 Mbps. For those not satisfied with having just AT&T and Comcast to choose from, there are two other internet companies that can resell those same connections at much higher prices.

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