Well gDocs isn't working ok, too many bugs and it's pretty slow (especially when saving documents). I have tried several alternatives:
- Zoho - they say it's not compatible with Opera and it;s true - you even can't CTRL+V text
- Buzzword - it's really slow, and some functions don't work properly (on all browsers) for example "increase indent" increases a random text indent
- Etherpad - was taken over by google and is shut down - Peepel - it's a cool thing, almost a free virtual desktop in a browser but it's buggy -> a saved a document, tried to open it end an error occured. the document was lost
- OpenGoo -> went commercial

At the moment I'm testing ThinkFree Online - it'a a bit slow (Java :P) and some minor things don't work (like drag a toolbar) but it has cool functionalities (almost like OpenOffice! which I use at home), it actually works with opera (create, save, edit document).

Maybe I'll try Scribd but is it a office/share platform? any other worth trying??