I'd like to point out, his success is good for everyone in the valley. He succeeds, you all succeed, but that goes for any entrepreneur... who cares about anything else otherwise.
I know dozens of non-tech-savvy people who visit Facebook every day. I know people who check Facebook more often than their e-mail. I certainly have issues with aspects of Facebook as well and everyone on this board probably has a list of things they'd change if they were in charge (I know I do), but Facebook's breakneck growth and absurdly high visitor loyalty show that they absolutely produce something of value.