Shir Chadash is a Conservative synagogue in the New Orleans area with a Facebook page. Its rabbi, Ethan Linden, has a Twitter account.

Cornerstone Chapel of Leesburg, Va., uses Facebook and Twitter to reach its members throughout the week. Gary Hamrick is senior pastor.

Celebration Metropolitan Community Church in Naples, Fla., uses a MySpace page to connect with members. Lillie Brock is the reverend.

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].