It doesn't really make sense to compare this number with other companies in the same sector. Long-term, the stock price needs to reflect the actual income and g

It doesn't really make sense to compare this number with other companies in the same sector. Long-term, the stock price needs to reflect the actual income and growth of the company. Otherwise we are in "greater fool" territory. There is good reason to be skeptical of Amazon's valuation, and that of many other tech companies. (Not that for the record, I am almost exclusively a growth investor in the speculative part of my portfolio). Google still has room to grow, though. I am actually more worried about Facebook's risk/reward profile.