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Microsoft said that immediately after their release next year, Internet-hosted Office Web applications including Word, Excel and PowerPoint will be available "at no cost" to some 400 million of the company's Web services account holders.
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So it's not exactly available for everyone....just those that already are in the Web Services account....whatever that is....
Maybe anyone with a Hotmail, MSN, Live.com or Bing account. I think I have six of those 400 million.