A company's customers determine its value. Facebook's customers are advertisers, not stock purchasers. Advertisers have valued them at a few billion dollars. T

A company's customers determine its value. Facebook's customers are advertisers, not stock purchasers. Advertisers have valued them at a few billion dollars. The stock purchasers put that value at over $100bn. For some reason, people took the stock purchaser's word over the actual customer's word.