Blog Post 1-Goldman Invests In Facebook at $50 Billion Valuation

http://www.huffingtonpost.com/2011/01/03/facebook-valuation-goldman_n_803447.html

In a deal with Goldman Sachs and a Russian investor, Facebook has raised $500 million and the company itself is now worth $50 billion. This makes Facebook worth more than eBay, and Yahoo. According to the article this will give Facebook more "firepower" to develop new products and do more things with the company.

Questions I have are if users of Facebook don't have to pay to use Facebook , why is so much money always being invested in it? And will Facebook eventually cost money?

http://www.allfacebook.com/facebook-valuation-rises-to-52-1-billion-in-latest-auction-2010-12

This article says that the shares of Facebook stock are now at 21.90 but by the next week they will be 40 cents cheaper