The Web 1.0 bubble wasn't based on the way in which people found the money to buy these stocks or the hubris in the expectation that these stocks would always go up. It's just about fundamentals. When you buy a stock, you are buying how much the company earns today and adjust that for how much it could earn, say, ten years from now.
People bought Pets.com either with the naive expectation that it would earn billions in the future or with the expectation other people would think so. There was no evidence, just lots of hope and the eternal wish to get rich.
So you and Marc are telling me that Facebook is really worth $10 billion. You two are saying that that's a realistic expectation based on an objective evaluation and anyone who doesn't agree should be ridiculed. Ah... there's the hint. Ridicule is a cover for fear. Personally, I don't need to hide. I have the fundamentals -- and time -- on my side.