From Big Journalism:

Note the timing. This article came out on November 23, 2010, just weeks after the Democrats took a beating at the polls. David Brock is not some media crusader, he’s a Democrat operative and his goal is to help the Democrats. To the extent any opposition to them can be weakened, or beaten in the media, it benefits the party electorally and on certain issues. In fact, as an aside, there were people telling the Republican Party about what the possibilities were and what was coming even before 2010. I know, I was one of them.

There’s also this tidbit from the Daily Caller:

https://twitter.com/#!/Unite4Liberty/status/178060386581491713

Daily Caller

Hong Kong gambler Bill Benter, a controversial  supporter of causes many consider anti-Israel, is a funder of Media Matters for  America, The Daily Caller has learned.

“I have been a contributor to Media Matters for many years and am proud to support  the important work that it does fighting for truth in media, working for more  honest political discourse and promoting our shared progressive values,” Benter  told TheDC in a statement.

A source told TheDC that Benter donated to Media Matters, at least in part,  so the liberal organization could bring MJ Rosenberg on board as its foreign policy voice.