>You have to believe that Amazon is poised for much higher growth than they are to justify their current stock price.

How many decades now have we lived in a world where the demand for investment far outstrips sane investment opportunities? In such a world, do stock prices have to be justified as you insinuate? And what happens when the prices are far higher than can be justified? I ask not rhetorically, but rather whether I should be hoarding shotgun shells and canned goods and hiding in the basement.