a little info on the OOXML issue ...
About OOXML:
Office Open XML (commonly referred to as OOXML or Open XML) is an XML-based file format specification for electronic documents such as memos, reports, books, spreadsheets, charts, presentations and word processing documents. The specification was developed by Microsoft as a successor of its binary office file formats ...
http://en.wikipedia.org/wiki/Office_Open_XMLThis is a NO OOXML campaign website
http://www.noooxml.org/.