“Where you at?”

Do you remember those commercials from Boost mobile where they made rappers and their friends into bubble-people to represent the dots that show where your friends are on a Boost phone?
It strikes me that I haven’t seen any ads like that in a while; not just the creepy bubble-people, but ads touting the ability to ‘find your friends’. With how frequently people post their location on tools like Twitter or Facebook, I still don’t see much adoption for GPS location pin pointing your location.
I think it may have something to do with the fact that people want to choose when to tell others where they’re at – and when that’s the case, there isn’t ENOUGH sharing to make those GPS location tools worthwhile. I’m not rushing to check where the three or four people I know using Google Latitude are at. There’s just not enough critical mass. Tools like Dodgeball, Google Latitude, Brightkite, Loopt and many others have been available for some time now. Maybe we’ve found a limit to what people will share? Or maybe this is just an idea who’s time hasn’t yet come.