The Opera browser does actually work with Google Documents, you can make it do so by going to the following URL:

http://docs.google.com/?browserok=true

Everything on this screen seems to work fine. As far as I can tell, Google Documents COULD work on Opera if they gave it a chance to do so.

The problem is that when you try to open a new document the edit screen displays fine, and probably works fine, but Google automatically forwards you away a few seconds later no matter what you do.

It's not that Opera can't work with Google documents, it's that Opera hasn't been tested with it and Google keeps trying to drive you away, even though Opera has no trouble displaying the document edit screen.

I just wish Google let people stop the autoforwards with a cookie instead of adding the stuff at the ends of URLs. I'd love to see just how well Opera copes with Google Docs, because it copes with the full AJAX version of Gmail just fine.