See a Dec. 7, 2006, UPI story about the flu warning.

Read a July 23, 2009 article about the warning sent out by health officials concerning Hajj and the swine flu epidemic.

Read a Royal Embassy of Saudi Arabia page about Hajj requirements, the fifth pilar of Islam.

United for Peace & Justice is a coalition of more than 70 groups, including several religious groups, committed to opposing war.

Voices for Creative Nonviolence has deep, long-standing roots in active nonviolent resistance to U.S. war-making.

Christian Peace Witness is an ecumenical, group of partners who are committed to raising a Christian voice for peace.

Kerry Shook is pastor of Woodlands Church in Houston, where members are encouraged to tweet during sermons.

Jason Ingram is pastor of Highland Hills Baptist Church in Oklahoma City, Okla., which has a MyChurch.org page. Ingram also has a personal Facebook page he invites everyone to visit.

John Voelz is pastor of Westwinds Community Church in Jackson, Mich. The church has its own social network, called Community W. Congregants are encouraged to tweet about sermons, and a Twitter feed is posted on the church’s website. Voelz also writes a blog popular with church members.