What happens in Vegas...is seen on Foursquare
First it started with Facebook, MySpace and Twitter status updates (i.e. getting caught in a lie about your whereabouts - especially if it's work related - and now it's moving into Foursquare and the like. I do wonder if people know that their info is actually public and not private, unless otherwise specified.
I wonder how Google Buzz fits into all of this (and how it can be parodied!)