Webmasters! Can anyone explain to me how lets say face book for example is valued at 15 billion dollars?

[fefe]

I don't see an enormous amount of ads on there. I guess i'm just tryin to understand how all that works.

[Jakester]

The big boys with an eye on the long term are focused on building an asets more than immediate profits. Facebook has just recently started pay per click advertising, like what has made google their billions.

websiteoutlook.com which makes automated traffic, revenue estimates values facebook at $1.2 Billion USD
With a Daily Pageview of 550,000,000 and Ads Revenue of $1,650,003

Small store sites get sold for that amount of 1 year's income sometimes 2. Based on the given income figure 602 million to 1.2 billion matching websiteoutlook's valuation. It must be the bidding war mentality, when it comes to a perceived one of a kind asset that accounts for the 10x current earning potential valuation.