Gerald Bauer wrote:

Two books got published just a week or two ago that show you how to build your own social networking web sites that include profiles, news blogs, forums, photo galleries, newsletters, mobile access and much more.

The Apress book titled "Practical Rails Social Networking Sites" by Alan Bradburne hosts its example social networking site titled "RailsCoders" online @ http://railscoders.net

And the Addison-Wesley book titled "RailsSpace: Building a Social Networking Website with Ruby on Rails" by Michael Hartl & Aurelius Prochazka hosts its example social networking site titled "RailsSpace" online @ http://railsspace.com

If anyone knows other books covering how to develop your own social networking sites let us know.