The writer is either disingenuous, deadpan satiric, dumb, or demented. He "confuses" Office 2007 compatibility with OOXML compatibility. He glosses over the different natures of OOXML and ODF. . . . I don't think he can POSSIBLY be this dumb, so I'm hoping for deadpan satiric; but I'm afraid it's just another disingenuous attempt to write something that will get comments and inflame the flamers. The link below is to a document that looks at the differences in the two "open" standards. It tilts to the ODF side, but I can't find a single factual error, just conclusions that may be valued differently.

http://www.freesoftwaremagazine.com/articles/odf_ooxml_technical_white_papere.com/articles/odf_ooxml_technical_white_paper