It goes without saying that this incident is typical behavior for the Internet (you can choose as the bad boy whomever you hate more). While some people are probably that foolish and/or mean in real life, I've had the opportunity to meet a couple of people who behave like that on the net and so far no one has been that belligerent in person. Until we can find a way to figure out how to take away people's stupid bravado on the 'Net, it will remain a mixed blessing at best (albeit, one that pays my rent).
Here's a question for anyone else who wants to take a crack at it: do you think that hiding behind a keyboard reveals the inner nature of people, or is something else going on? (I have theories about the latter, but I'll just see what others have to say).