At the beginning of 2011, Goldman Sachs announced it was investing $450m (£290m) into the social-networking company Facebook. This reported deal gives Facebook a valuation of $50bn (£32bn). Is the company worth such an amount? Concerns are already being raised of a new dotcom bubble.
Stephen Sackur asks Jim O'Neill, the chairman of Goldman Sachs Asset Management, why Goldman Sachs has decided to invest into the social-networking giant.
You can watch the full interview on Monday 10th January 2011 on BBC World News at 0430, 0930, 1530 and 2130 GMT and on BBC News at 0430 and 2330 GMT.
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