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Facebook expected to make stock exchange debut

1 February 2012 Last updated at 09:25 GMT

The world's largest social networking site, Facebook, is expected to have its stock market launch with a value as high as $100bn being estimated.

It comes after many years of speculation in the industry, which saw its founder Mark Zuckerberg turn down several offers made to purchase his business.

In the US, analysts have become excited at the prospect of its stock market appearance but uncertainty remains over precisely how much Facebook is worth.

Rory Cellan-Jones reports.

BBC NEWS Programmes Newsnight