Hartmann said he was not aware of Limbaugh's numbers, but based on his knowledge of advertising revenue from progressive talk radio the Media Matters boycott caused many companies to simply abandon political talk radio advertising all together:
THOM HARTMANN: David Brock and Media Matters were leading the boycott Limbaugh crusade, which did presumably some damage to Limbaugh’s show. I can tell you it did a lot of damage to progressive talk radio, because a lot of advertisers, right across the board, said just pull me out of all talk radio. I don’t know Limbaugh’s numbers, but I do know that, on our side, progressive talk radio took a hit as a consequence.
Hartmann also remarked he did not agree with Media Matters founder David Brock's assertion that Rush Limbaugh and Sean Hannity's potential departure from Clear Channel and Cumulus is a "win" for progressives.
The possible moves have more to do with the vertical integration of the radio industry than anything political, Hartmann said.