Interesting article on the new scientist website, re: aggressiveness online.
"Psychologically, we are "distant" from the person we're talking to and less focused on our own identity. As a result we're more prone to aggressive behaviour"
"I'm not sure what we can do to minimise miscommunication and abuse online. But being aware that we're not as good at communication online as we'd like to think seems like a good start. I know I often have to restrain myself from joining in."