even @ $25 the market cap is $55 Billion. since the company has already grown like a cancer, any P/E ratio higher than 20 seems very unreasonable. just as Zuckerberg stole the software to start Facebook, Facebook is vulnerable to another start-up, e.g. Instagram. they can't buy all the start-up's - and many tech entrepreneurs would want nothing to do with Zuckerberg. $1 billion a year earnings x 20 = $20 Billion - a very optimistic market cap. $9 stock price gives FaceBilk a $20B market cap - which is still very optimistic. so FaceBilk might be a "bargain" at $4 a share.