Here's a guy who went into his competitor's site and started deleting user accounts. It's amazing that people overlook this:

http://www.businessinsider.com/exclusive-mark-zuckerbergs-se...

He also rented out theatres so that his employees could see The Social Network on opening night - a movie that puts him in a decidedly unfavorable light. Saying that he "screwed over pretty much everyone he's ever worked with" screams of someone who doesn't know what they're talking about.