This library provides a pure Java interface for the Twitter API. Twitter exposes a web services API (http://twitter.com/help/api) and this library is intended to make it even easier for java programmers to use.
The business social network LinkedIn is shutting off access to its LinkedIn API for one company over what LinkedIn calls a terms of service violation. Headhunting app Pealk released a notice that it "will be no more" by next week. It raises the importance of reading the legal details, as well as the different definitions of open.