WhatsOnMyBookshelf is an online book trading application that makes it possible for users to exchange books using a simple point system. For avid readers who have rapidly growing collections of books they've already read, this is a clever little app to help them get their hands on new reads without having to spend any actual cash. WhatsOnMyBookshelf also provides the WhatsOnMyBookshelf API that provides access to this functionality.
Kippt, designed to make information workflow and archiving effortless, has launched a new API alongside a developer site and app gallery. The new, publicly available API simply opens up the existing Kippt API that continues to power the Kippt web service. Instead of pushing Kippt as a standalone product, the Kippt team hopes that the Kippt API will encourage developers to develop apps based on the Kippt platform.