Push notification startup Urban Airship is closing the doors on all three APIs from the geo infrastructure company it acquired in October. The data behind one of the APIs, SimpleGeo Places, will be maintained by Factual and become part of its Factual API. Other SimpleGeo functionality is being folded into Urban Airship's platform.
It's a little bit creepy, but it's also a little bit genius. Singles for Foursquare builds a dating and messaging service on top of the location-sharing application. The result is a mashup that could match up hip iPhone-using, Foursquare-playing, same-bar-going early adopters.