@RTH + @Faria, 90% of FB's revenue is generated from ADs, but I have still failed to understand that how many advertisers actually think freeloaders will visit the ads...truly waste of money in ads.
@attitude.ash, I couldn't have agreed with you more, if you look at FB with purpose of investing only and making quick money then it's the best investment deal. The whole purpose of advertising is to capture vase market for the cheapest price which FB offers; where you have 900 millions users who use FB and it's been called the biggest ad market in the world.
@Prometeus, if you truly want privacy you should not be on FB or posting those message or pictures which you don't wish to share. The ideal use of social network is now contracting with it's purpose...
The IPO sold at $38 per share, generating $6.8 billion for Facebook and $9.2 billion, collectively, for existing stockholders... it made history! ;)