A Public Display of Facebook

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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.