Pastor Harry R. Jackson Jr. is pastor of Hope Christian Church in Lanham, Md. He also heads the High Impact Leadership Coalition.

Linda Hardin is national coordinator for the Church of the Nazarene’s single adult ministries.

Paul Jarzembowski is the USCCB representative to the National Catholic Young Adult Ministry Association, which is an outreach to singles and couples in their 20s and 30s.

Spark Networks in Beverly Hills, Calif., owns online singles services, including JDate for Jewish singles, CatholicMingle.com, ChristianMingle.com and LDSMingle.com. In its 2007 trends reports, Spark Networks said it is seeing a rise in offline events connected to its dating sites and an increased subscriber base of single parents.

Repent America is a Philadelphia-based evangelistic organization that works against homosexuality, abortion and evolution.

Janet Porter is the president and founder of Faith2Action, a Christian advocacy group that works to influence politics and legislation. The group is based in Dania Beach, Fla.

Advance USA promotes Judeo-Christian religious values. It is based in Independence, Mo., and maintains a Washington, D.C. office.

The Unitarian Universalist Association of Congregations works to connect individual congregations with others across the U.S. Contact the executive assistant for the office of the president, Stephanie Carey Maron.

Neil Clark Warren, a psychologist and former dean at Fuller Theological Seminary, co-founded and chairs the eHarmony online dating service. He has written several books about relationships, including Date … or Soul Mate?: How to Know if Someone Is Worth Pursuing in Two Dates or Less.