Google has released version 3.0 of the YouTube Data API which includes new functionality and features including Topics API, Universal Search, Channel Bulletin Post, Full Subscriber List Management, and more.
Sure, YouTube gets all the press. And YouTube gets most of the mashups. But when it comes to video APIs, there's a lot more than just YouTube. In fact, there are 100 video APIs, from live content Ustream to micro-vlogging 12 seconds.