Microsoft rolled out a limited beta of its Live Office Workspace file-sharing and collaboration service today but will not open it to all comers for at least several weeks, and perhaps months. The service, which lets users post Microsoft Word, Excel and PowerPoint documents, as well as PDF files to an online storage space, then share them with others, will be available to those who preregistered in October, said Eric Gilmore, the senior product manager for Microsoft Office.

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