Once upon a time there was the great debate over JSON vs XML. The past few years have seen JSONs popularity rise despite XML (and other formats) being well-established. Our own statistics on ProgrammableWeb show a significant increase in the number of JSON APIs over 2009/2010. During 2009 there were only 191 JSON APIs registered. So far in 2010 there are already 223.
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.