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A computer store employee stacks copies of Microsoft's new operating system, Windows 7, ahead of its official launch in London - 

Thousands of people across the country, at the invitation of Microsoft, are hosting Windows 7 release parties next month. Microsoft is giving away copies of Windows 7 Ultimate to party hosts, who are getting some guidance from Microsoft on how to show off the newest version of Windows at their parties.

We wondered who would host such a party, and why?