It's when I have to talk before an audience that I'm having problems, regardless of the language. And in the www I have the comfort of anonymity!

Not just the comfort on anonymity, but the ability to stop and edit one's words, when desired! That's something that I find very comforting about the web, myself. Half the time I listen to myself in real life and mentally facepalm at the stuff I hear myself saying. And I try to stop and think before I speak!