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.
Mimeo.com just launched a new area to support its family of APIs, print marketplaces and enterprise print integration tools. Developers can build applications that offer print-on-demand services, using the Mimeo Connect Cloud Print API. Mimeo.com has long had a SOAP API, but has recently built an easier-to-use RESTful API for developers.