AMZN last Q revenue growth is not as good as expected, only 22%. Q1 2013 its revenue projection is also not good. I would say overall 2013 AMZN revenue growth will be less than 20%, probably around 15%. Then, 2014 its growth will be single digital. Once it's no longer a growth company. Its stock price will drop to have reasonable PE, 15-20. So, eventually it will go down much more.
I hope it happens really soon. I am holding my short position although I got killed a few times but I am so convinced that one day I will make my money back. I will see this ridiculous high price stock without profit to the end.