Brian Levin is director of the Center for the Study of Hate & Extremism, a nonpartisan research and policy center at California State University, San Bernardino. Levin is also a professor of criminal justice at the university.

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.

Peter Levine is the Lincoln Filene Professor of Citizenship & Public Affairs in Tufts University’s Jonathan Tisch College of Citizenship and Public Service and director of the Center for Information and Research on Civic Learning and Engagement (CIRCLE)  which studies young Americans’ civic engagement. He is also the author of The Future of Democracy: Developing […]

Gregory M. Herek is a psychologist at the University of California, Davis. He is a well-known scholar in the areas of prejudice against lesbians and gay men, hate crimes and anti-gay violence, and AIDS-related stigma.

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

Pam Kanaly and Shelley Pulliam are co-founders of Arise Ministries, a nonprofit, nondenominational women’s ministry based in Edmond, Okla., that holds annual conference retreats for single mothers.

David King is a senior lecturer in public policy at Harvard University in Cambridge, Mass.

Bike & Brunch is a Jewish, largely single bicycling group in the Baltimore-Washington, D.C., region.

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.