An anonymous reader writes: Microsoft has severely criticised IBM, saying Big Blue is pushing the OpenDocument Format standard to the detriment of Microsoft's Open XML standard. Darren Strange, senior product manager for Microsoft Office 2007, said: "The difference in view is that [IBM] are espousing 'one standard fits all', which is hard for us. IBM seems keen for ODF to be the only standard for everyone. The issue is about choice — there's room in the world for more than one open standard. And it's all XML — technically speaking, we speak the same language."