Facebook Timeline, the new profile design launching soon on Facebook, makes broad use of the Bing Maps API. Similarly, the Facebook Places feature also incorporated Bing, but now both maps use a different, more simplified style.
Flickr has added more real-time goodness to their photo API. Using a publish / subscribe (PubSub) system, developers can now receive real-time updates across millions of photos across Flickr friends, Flickr Commons, and by tags and geo-location using the Flickr Real-Time API.
Over 11,000 people participated in the first annual National Day of Civic Hacking on June 1st and 2nd, 2013. At the event, developers collaborated with government agencies and entrepreneurs to create applications that help solve civic and social problems impacting local communities. Developers used a variety of public APIs and datasets to create their applications, including the US Census Bureau API, which was used to create an interactive application and several infographics. The US Census Bureau API is the first API created by the US Census Bureau and was released to the public back in July 2012.