Clear Channel CEO Mark Mays won’t be keeping the letter from Senate Majority Leader Harry Reid (D-NV), and signed by 40 other Democratic senators, demanding that Mays repudiate comments allegedly made by syndicated Talk host Rush Limbaugh. Mays is letting Limbaugh auction the original letter on eBay to raise money for a charity that provides scholarships for the children of US Marines and police officers killed in the line of duty. As of mid-day yesterday, the bidding had passed 45K. Limbaugh announced yesterday that he will match the winning bid with his own donation to the charity – and challenged Reid and the other signers, including presidential hopefuls Sen. Hillary Clinton (D-NY) and Sen. Barack Obama (D-IL), to do the same. The online auction continues through Friday.