It’s a bit challenging to fathom that a firm whose main product is user-generated media (versus syndicated media for example) has an IPO valuation that’ll be larger than McDonald’s; Cisco’s and/or Amazon’s market caps. Moreover, it is also a bit of a stretch to reckon how said firm will be able to sustain this valuation. Nevertheless, rationality and market-speculation are clearly not mutually inclusive.
(Source) WSJ: http://goo.gl/Hpqqm