Funnily enough for the 9 months I was with Tiscali, the only thing keeping people there was the 12 month initial contract tie-in. I can't believe they could have dropped this and still retain customers.
Worst ISP ever, throttled almost all the time I wanted to use the net (i.e. after work / weekends) to crippling speeds. I was literally seeing below 56k dialup modem speeds on my 8Mb (line-sync at 7Mb) link. Eventually I got out because they "couldn't" fix the speed issues due to whatever way the service was being routed.
I changed to ICUK, small outfit, costs a little more, capped packages (pick the one that fits) but more importantly NO THROTTLING. I don't download an obscene amount but when I want it, I want it now, that's the point of broadband isn't it? Oh and their customer service is unbeatable, real people, in the UK, who can speak English!
If they do have an outage (they have once... in the past year) they go out of their way to tell you what the problem was, directly, by e-mail, instead of playing hunt-the-hardly-ever-updated-status-page at Tiscalis joke support site.
No, I don't work for them... but people here seem to be saying one ISP is much like another these days, I'm just saying there are still a few hidden diamonds out there if you look hard enough.