Remember when Mark Zuckerberg blamed the problematic old Facebook mobile app--dubbed "freakishly slow" by some--on "betting too much on HTML 5?" So does backend-as-a-service (BAAS) provider Sencha, and to rebut Zuckerberg's assertion that using HTML5 was "one of [Facebook's] biggest mistakes," Sencha built its own mobile webapp, Fastbook, to demonstrate that HTML5 is ready for prime time.
The process of taking your photos and sharing them online with your friends has never been easier. There are several services available to do that today like TwitPic, YFrog and others. The success of Instagram even led to an unofficial API, which was subsequently shut down to be eventually replaced with its official API. The photo sharing services space seems ripe for the emergence of APIs, which in turn might trigger the next round of innovation from developers.