Facebook valued at $100 per user

Facebook has 900 million users, it makes $1 billion profit per year and the IPO values the company at around $90 billion. This comes down to $1.10 profit per user per year and a valuation of around $100 per user.

Such a valuation implies that investors expect continued exponential growth. However exponential growth will not continue forever, and my gut feeling is that Facebook's growth will cease to be exponential within the next few years. Most likely though Facebook will leverage its near monopoly in social media to launch other services and seek growth elsewhere, but that always remains a gamble.
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