More than one person has said: Ubuntu One seems good but I need it to work on Windows too. Well, y'know, the roar of the people is not to be denied. Lucio Torre and some of the Ubuntu One team are going to be running a sprint at PyCon to port Ubuntu One file sharing to Windows. If you'd like that and you could help out, add your name to the sprint page!
On I wrote PyCon sprint to get Ubuntu One on Windows, on the subject of Ubuntu One and Windows.
Dread Knight
Andrés G. Aragoneses
Why don't you guys stop wasting your time in a propietary product when there's an open source alternative that is already cross platform? (iFolder)
duanedesign
Keep up the good work. Ubuntu One is awesome.
Moritz Winter
Would be awesome if Bookmark Sync would be available under windows too!
That's one of the main reason I'm not using it.