Follow me on this one: with Twitter, you have to actively type in “Having coffee at Westville Mall Starbucks with @SocialBob and @JaneDoe” which, outside of The Bubble, sounds a whole lot like either bragging or oversharing. But if you check in with Foursquare or Gowalla then the apps themselves are doing the bragging for you - you’re just playing along and, if we buy into the hype, allowing friends of yours who are also at the Westville Mall to find you.

The Toad Stool by Alan Wolk: Is Twitter Over?