Today it's official. The social networking site Facebook filed to sell shares on the stock market. In its filing, the company said it was seeking to raise $5 billion and wants the ticker FB for its shares. But Facebook is aiming higher, hoping that the initial public offering could value the company to somewhere between $75 and $100 billion.
Ian Maude is an analyst with Enders Analysis in the UK, and a former Vice President at AOL.