The last year has seen a virtual worldwide tour of app contests, finding the best mobile developers across the globe. In March it comes to North America for only the second time, in Texas for SXSW. The App Circus, as it's called, is looking for mobile apps to showcase, and the deadline is fast approaching.
Wikimapia is a web service that allows users to edit information on a world map in a wiki format. Users of the site can add places, edit them, and get the information previous users have entered. The info there is currently pretty sparse, but the service is rather new. The company also recently released a Wikimapia API that supports getting information from the web service.