The Huffington Post reported that a newspaper was told by a court that it must reveal the name of an anonymous contributor to the comment section of an online story. The plaintiffs in the case complained that the comment was libelous. See "Illinois Newspaper Forced To Disclose Names of Anonymous Commenters", Huffington Post, 2010-06-03.
This made me think of a quote that I remember as this: "The antidote to too much freedom of speech (or the press) is more freedom of speech (or the press)." I thought Winston Churchill made it. I can't find it in Bartlett's Quotations, George Seldes' "Famous Quotations", in Wikiquotes, or with a Google Search.
I did find a whole bunch of interesting quotes relating to freedom of speech and of the press under Censorship in Wikiquotes. Two that seem to fit the above case are:
"They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." - Benjamin Franklin, Historical Review of Pennsylvania (1759)
"Our liberty depends on the freedom of the press, and that cannot be limited without being lost." - Thomas Jefferson
I did find a good quote by Winston Churchill in the Censorship section:
"You see these dictators on their pedestals, surrounded by the bayonets of their soldiers and the truncheons of their police. Yet in their hearts there is unspoken - unspeakable! - fear. They are afraid of words and thoughts! Words spoken abroad, thoughts stirring at home, all the more powerful because they are forbidden. These terrify them. A little mouse - a little tiny mouse! -of thought appears in the room, and even the mightiest potentates are thrown into panic."
I am sure you can think of quite a few dictators or terrorists who fit this quote today.