So you are ok with contracting to do some work for someone, but instead of delivering the product that was asked for, you delay your client's work, and then release a similar product of your own, taking the market away from them? You think it's okay to do that because you (after the fact) consider your client to be a "douchebag"? Do you think that your ethical failings are somehow negated because you are a hacker, or because you meet "people like them" at some tech party? After all, according to you, they weren't going anywhere anyway? I wonder if you would say all of that if it was you sitting with a fraction of Zuckerberg's $40 billion. Would you say, "Well he deserved it because he was a hacker and I was just an idea guy. Oh man, ideas are cheap." Seriously, W.T.F.

It's not a matter of the Winklevosses being "douchebags", or even "just coming up with an idea", which is false anyway as they had already developed the code and wanted Zuckerberg to finish it. They trusted Zuckerberg to deliver a product. Instead he held them back, while making his own version of their work. He screwed them over plain and simple.