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Hacking: Will News of the World scandal hurt News Corp?

Several big companies including the Halifax, Virgin Holidays and Butlins have said they will not place adverts in the News of the World this weekend, in response to public anger over recent phone hacking allegations.

It has also been claimed that the newspaper paid tens of thousands of pounds to police officers for information over a period of years.

The BBC's business editor Robert Peston has been examining how events at the paper could impact on Rupert Murdoch's media empire, including News Corp's proposed takeover of BSkyB.