Microsoft gunning for Adobe's PDF format?

Microsoft's Metro document format, which the company plans to include in the next version of Windows, is designed to allow for the printing, viewing and archiving of files--without requiring the program that created
them. Sound familiar? While there's plenty of overlap between Adobe's popular PDF and the document format that Bill Gates showed off at WinHEC last week, the two companies are downplaying any competition. Still, Microsoft's home court advantage in building yet another function into its operating system versus the unparalled entrenchment of Adobe's format, could make this an interesting battle... In our Open Source blog, Dana Blankenhorn muses on the costs to the Windows software ecosystem everytime Microsoft adds another feature to Windows that was previously found only in third-party applications...