Read Juan Cole's highly recommended piece on the Blogger revolution:
Here's a money quote:
And this difference, my friends, accounts for why bloggers get vilified. Journalists can be switched to another story, or fired, or their stories can be buried on page 36. We can't be fired. So if Martin Peretz doesn't like what we have to say, he will publish a hatchet job on us in The New Republic, seeking to make us taboo. If you can't shut people up, and you really don't want their voices heard, then all you can do is try to persuade others not to listen to them or give them a platform. The easiest way to do this is to falsely accuse them of racism or Communism some other character flaw unacceptable to polite society. Because of the distributed character of blogging "computing," however, such tactics are probably doomed to fail.
We are not the mainstream media, and we are here. Get used to it.