--"I met Mark Zuckerberg in School and he asked me to join TheFacebook and I refused" Assuming you are telling the truth, you can't see a brilliant business even if its in your face--

Only people who do not actually have to make the choice find such decisions obvious. When Microsft invested in fb most people thought that it was dumb move. But they look smart now when GS is getting people to invest in them at 50B. Which now people think is a dumb move and so on.

Bottom-line, you may have turned down some version of theFacebook already but you would not know till 10 years from now...

It's "met", not "mat".