Simon Singh writing in yesterday's Sunday Times says that bloggers are reluctant to write anything critical for fear of financial ruin. Singh himself is currently being sued and he has spent £100,000 to defend the suit and he could end up paying up to a million pounds. It's always nice to know that there is the absolute defence of "fair comment" to libel, which means that what is said is true.
This is what Simon Singh had to say
UPDATE - Some more on this case by George Monbiot.