If you have second thoughts about OOXML, then you can choose one of the many other applications that already support ODF. OOXML is supported by no applications at the moment, but Microsoft Office 2007 is close to supporting OOXML (it never will). IBM is among those who support OOXML and it claims to have already gone beyond Microsoft Office. The article about which covers this reminds us that:
ODF is now an international standard and being considered or favored by the large customers, notably national governments concerned with long-term archiving of digital information.
If you ever see claims of "industry support" for OOXML, remember this: Novell is being used by Microsoft at the moment in order to brag about OOXML support from "industry". Novell is mentioned by name. It's truly appalling but quite not as surprising as seeing the GNOME Foundation selling out in a similar fashion because parts of GNOME are a subset of Novell. Some of this is paid for.
Real standards are earned, not bought. 'Standards' which are being bought pass the financial burden off the (single) vendor and onto customers. It's a question of economics. OOXML would be too foolish to approach. ⬆
Many sites will go offline and many social control networks will shut down once they realise or even openly admit they spend money and time gardening a bunch of bots and slop
it would rightly seem like the era of centralised "social" sites (they're not social, they're about controlling the users) is ending, not overnight but gradually