JustWarTheory.com is an extensive guide to philosophical studies of warfare, maintained by Mark Rigstad, associate professor of philosophy at Oakland University. It is a treasure trove of links, information and articles on just war theory.

The Rev. Fumiaki Usuki is the temple minister of the West Los Angeles Buddhist Temple, which has a Facebook page.

The Catholic Diocese of San Jose, Calif., uses Facebook and Twitter to stay in touch with local Catholics.

Courage to Resist is a California-based organization that supports war resisters. Email via their website.

Jeremiah Owyang is an industry analyst at the Altimeter Group in Silicon Valley and a columnist for Forbes CMO Network. He has blogged about social network statistics and can discuss how to interpret them.

Stephen O’Leary is an associate professor of communication at the University of Southern California in Los Angeles. He wrote a chapter, “Cyberspace as Sacred Space: Communicating Religion on Computer Networks,” for the book Religion Online: Finding Faith on the Internet.

Wendy Griffin is a professor emerita at California State University, Long Beach. She wrote a chapter, “The Goddess Net,” for the book Religion Online: Finding Faith on the Internet.

Naseeb is an Islamic social networking site that emphasizes relationships.

Brian Anderson is a member of a house church in Sonora, Calif. He also runs a website, Great Commission House Churches.