MoveOn is just finishing up the two-week Google AdWords campaign, intended to praise or censure centrist Democrats for their position on the stimulus. Depending on the target's vote, the ads send users to a page highlighting the number of jobs that will be created or to one featuring the lawmaker's contact information. A similar campaign is in the works for the current omnibus spending legislation, but MoveOn's economic campaign director, Daniel Mintz, said he doesn't have any specific plans laid out yet.

This time around, Reps. Bobby Bright of Alabama, Walt Minnick of Idaho, Collin Peterson of Minnesota and Heath Shuler of North Carolina were among MoveOn's top targets. Sens. Mary Landrieu of Louisiana and Evan Bayh of Indiana meanwhile earned positive ads for their "yea" votes.

While MoveOn has advertised online for years now, this is the first time the group has launched a search engine campaign "specifically calling out legislators of any kind," Mintz said. Indeed, the progressive group is catching on to a developing trend: turning lawmakers' names into online lobbying tools.