Masjid Abdul Muhsi Khalifah is a Brooklyn, N.Y., mosque with a Facebook page where members discuss everything from World Cup Soccer to current events and religious issues.

The Center on Conscience & War is a faith-based organization that advocates for the rights of conscience, opposes military conscription and serves all conscientious objectors to war. Maria Santelli is the executive director.

Congregation Beth Elohim in Brooklyn, N.Y., has an active Facebook page. Rabbi Andy Bachman is its creator.

Berlin Masjid in Berlin, Conn., has a Facebook page that is administered by two college students and Sohaib Sultan, an Islamic college chaplain.

Stephen Shields is the founder of FaithMaps. He freelances for Leadership Network, where he wrote a guide (enter “social networking” in the Keywords field) to online social networks for churches.

Helen Osman is secretary of communications for the United States Conference of Catholic Bishops and can discuss the conference’s guidelines on use of social networks among Catholics. Contact [email protected].

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.

Glen Moriarty is an assistant professor of psychology and counseling at Regent University in Virginia Beach, Va. He wrote an article about Christian social networking for the Journal of Religion and Popular Culture.

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.