I think today foursquare does serve a lot of the dopplr niche. When i'm traveling and i check in to a new city, i find other folks who are in town. It's not so

I think today foursquare does serve a lot of the dopplr niche. When i'm traveling and i check in to a new city, i find other folks who are in town. It's not so good for planning, but it works for discovering who's in town.