It could be quite handy that
Great for those "What the hell did I do last night??" moments if nothing else
Google has ramped up its Latitude service, adding the ability to see where you've been and alert you when your friends are nearby. Latitude already offers the ability to share your location with others, so friends and family can keep tabs on your wanderings, but now you can also see how you ended up in that South London flat …
"That is unless any of them owns an iPhone - the inability of Apple's handset to support background tasks makes the iPhone unsuitable for Latitude, though it will work as long as the user keeps it in the foreground."
I have a G1. Latitude on Android doesn't update your location unless you have the Maps application running, which makes it just as useless. I develop apps for Android and it's a piece of piss to set a timer which executes some code every x minutes to upload your location to a server. Latitude for Android just doesn't work that way for some reason. "Background update every x minutes" would chew up your battery, but it should at least be an optional feature
.. in the comments on El Reg compared with the ecstatic comments on the Latitude Blog.
Humans are equipped with this thing called memory - you use it to remember (a) where you have been and (b) how long you were there.
Perhaps we're seeing the emergence of humans that cannot remember anything over an hour old - in which case I can see that Latitude could be useful.