Location awareness mobile application Foursquare is best known for broadcasting your whereabouts to friends. In mid-September the company raised about $1.5 million in funding, giving it a valuation of about $7-$14 million. With that round of funding the company was able to ramp up their developer services by designing various APIs.
As part of the API announcement, Foursquare launched an app gallery. Some of the applications available in the Foursquare App Gallery include Foursquare Android, Mob Zombies (location based Zombie game), and YipIt (New York City deal finder).
Foursquare was started by Dennis Crowley. Crowley previously sold a company to Google called Dodgeball. Dodgeball was also a location-based mobile application. Google ended up shutting down Dodgeball and used the technology to design the concept behind Google Latitude.
To learn more about Foursquare APIs, visit the Google Groups page.