But.. What's the whole point?
With the many checkin services out there, there needs to be a way to simplify it.
We believe foursquare (for now) offers the most complete database of venues worldwide, and a good mix in privacy features which a location checkin service needs to have. Not to mention, their platform is the most developer friendly and easiest to export your data out of. We are also big foursquare users so naturally, we will build a platform which works for us.
How it works?
First of all you sign in with your foursquare account. Next you connect to external services (such as Facebook Places). Then all you have to do is check in publicly and if there's a match the magic shall happen.