Online stalking has gone programmatic. People search engine Whoozy has a person search API. With it, you can get results for a name from social networks and blogs, in addition to standard search engines.
The rise of Bitcoin has resulted in the development of a variety of services that enable individuals and companies to track Bitcoin, create and manage Bitcoin wallets, and perform transactions using the cryptocurrency.
Stack Overflow, the very successful question and answer site for programmers, have now released their own API into public beta. The API actually works with all of the Stack Exchange sites, including serverfault.com and superuser.com, with more sites possibly launching in the future. The API is supported by the site http://stackapps.com.