Microsoft recently released service pack two (SP2) for their flagship office product, Office 2007. As I’m not a user of Microsoft products, normally I wouldn’t have noticed, but Office 2007 SP2 had an important new feature for users of Open Source office productivity software that made me pay attention. SP2 contains Microsoft’s first native implementation of the file format Open Document Format (ODF), originally created for Sun’s Open Source OpenOffice product. ODF was standardized by the International Standards Organization (ISO) before Microsoft’s rival Office Open XML (OOXML) and is seen as the competitor to Microsoft’s offering for the future of XML based office file formats, so Microsoft implementing it in Office is a big deal.