This author has a forthcoming book on it: http://www.patheos.com/blogs/slowchurch/2011/09/29/the-slow-church-conversation/
Here is an article in the Houston Chronicle about Slow Church: http://www.chron.com/life/houston-belief/article/Slow-food-movement-serves-as-church-inspiration-2080311.php#page-2
Also, here is another article on Robert Putnam, the author of Bowling Alone, and his research on church-based friendships. http://www.catholicnews.com/data/stories/cns/1200867.htm