I really like this discussion, and I have two comments. First, I think we should separate Free Speech with Anonymity. The blogger, at the time Google revealed his/her identity, was not found at fault for her words. However, if your saying something about another person, negative or otherwise, you should have the right to know who it is.
StriderA,
As for Colbert and The Daily Show Vs Fox News; editing is a wonderful thing (R. Lee Irmy had an entire conversation with John Wayne in a beer commercial, despite Mr. Wayne being quite dead for many years). These shows are supposed to be for entertainment; they are not designed to be entirely factual, to say the least. Therefore, before passing judgement on FoxNews, I would strongly suggest learning the context of the statements made. I would also recommend keeping track of the number of times Colbert and Stewart defame others in the name of comedy(which doesn't seem to bother you). Ironically, your post proves that there are people who harbor animosity towards FoxNews based on the "parody" of the stories told on these shows. Does that mean that FoxNews can sue Viacomm for slander? Or is it OK to defame people so long as it is supposed to be funny?