Dan Barber’s On Diaspora: Christianity, Religion, and Secularity is available for purchase direct from the publisher, as well as from Amazon (US, UK) and Book Depository — and wherever fine books are sold!
Even if you can’t get it in time to follow along with the book event, you should rest assured that the questions raised by this book will continue to shape conversations in theology — blog-based or otherwise — for a long time to come.
An und für sich 
Conversations in theology occur somewhere other than blogs?!?!