Does CBS stand for C-ampaign B-ull S-hit?

During the Super Bowl, CBS plans to run ads for the Bush reelection campaign.
What they have refused to run is the winning ad in MoveOn.org Voter Fund's Bush in 30 Seconds ad contest.
CBS refuses to air it. Why? They won't say.
Network television has a tacit obligation to the viewers to present honest programming. If that is assumed, then can't we assume all advertisers should have a right to buy time as long as their ads meet the network's basic criteria for decency?
To check out the ad and ask CBS to air ads like this one, go to: MoveOn ad
If you agree voters have the right to hear both sides, sign the petition.
We can't match the Bush machine for money and power, but we can make ourselves heard, one voice at a time, until the roar is deafening.