It's amazing how Office manages to be incompatible with anaything else. Word and Excel files have grown up into bloated monsters full of unheard-of features that always make programs like open office and mobile versions of the programs break when they read less simple files. I can never fill simple forms that are sent to me because they are never opened quite right in openoffice. And it is quite annoying that it can't diagnose exactly where can be a problem when you switch file formats.

I hope the MS Internet Office trend means files will become simpler, and more compatible with OpenOffice and others... That could happen: for the first years that people start using the "iOffice" we manage to have more interoperability between windows users and others. That until Microsoft starts making things complicated again.

On the other hand, I have been seeing a great difficulty in my work in the adoption of the docx format, not to mention windows Vista. How long are windowze users going to be stuck at the pinnacle of incompatibility?