Note: This project is no longer maintained. The website is still online and the code available on WordPress.org but will likely no longer work.
WPBook was started in October 2007 as a project of the Center for History and New Media (CHNM) at George Mason University by Dave Lester.The goal was to find a way to bring a self hosted WordPress blog into Facebook as an application.
John Eckman joined the project in May of 2008 and has since become the lead developer on the project. and I started contributing in August of 2008.
For more information vist http://wpbook.net or http://wordpress.org/plugins/wpbook.
A lite version of the plugin was also as an option for sites that didn’t have SSL at the time. That version can be found at https://wordpress.org/plugins/wpbook-lite/