Agreed. The writer gives credit to Facebook, Groupon, etc. and then throws in at least 10 phrases of hedging/qualification and then warns us of the next, as ye

Agreed. The writer gives credit to Facebook, Groupon, etc. and then throws in at least 10 phrases of hedging/qualification and then warns us of the next, as yet unseen, wave of startups that, it blindly guesses, might just be, perhaps, possibly, a tad, just a bit, overvalued. Thanks for the tip, Economist. Let us know when you pair some facts with your sanctimonious speculation.