Mars Hill Church in Seattle uses its own social network, The City, to keep members of its several campuses connected. Mark Driscoll is pastor.

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

Holy Cross Evangelical Lutheran Church of Fairfield, Ohio, uses Facebook to connect with its members and lists that under the church’s ministries. The church also links to the ELCA’s Imagine Yourself social network. Timothy R. Swanson is reverend.

Southwest Christian Church in East Point, Ga., uses its Facebook page for a variety of things, including evangelization.

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.

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].

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.