Even so, it can take a day to run the virtual experiment.

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But the company was dismissive of our Virtual Bagel experiment which had managed to gain 3, 000 "likes" for a non-existent business in a few days by placing some adverts.

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Thus it's not clear to everyone why the world really needs this grand experiment in virtual currency.

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Vega's performance was followed by the British group Duran Duran who, keen to experiment with the latest technology, created their own virtual island within the world to perform concerts.

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In a 2004 experiment, Kaye created a piece of software he called the "virtual intimate object, " or VIO.

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Like Dr Ehrsson's experiment, volunteers were fitted with stereoscopic headsets and were shown images of virtual figures -- this time the figures appeared in front of them.

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At HCL Technologies, an India-based IT services firm with 88, 000 workers, chief executive Vineet Nayar recently launched an experiment in which he gave a group of 100 employees 1, 000 virtual currency units to use in an online exchange.

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