Eli Pariser

The group was founded by Boyd and Joan Blades, two Silicon Valley entrepreneurs, in the late '90s as a liberal political force. MoveOn.org recently sponsored the "Bush in 30 Seconds" ad contest. Some 1,500 contestants submitted ads and more than 100,000 people voted for them online. Moveon.org is now raising money to air the winning ad on TV this week and is even trying to get the ad aired during the Super Bowl.