Facebook plans to file documents for its highly anticipated IPO on Wednesday. This will value the world's largest social network at $75bn- $100bn. Facebook's revenue is driven by its advertising business, as brands have rushed to the site to interact with consumers through display ads and fan pages. The online social networking giant has been able to increase its world-wide advertising revenue from $738m in 2009 to $3.8bn in 2011. 

Related News: 

Decision to float Facebook may result in biggest consumer technology public offering in history

2012 set to be biggest year for Internet IPO's since 1999

Read More at Bloomberg.com