I applaud the effort of Ubuntu One. Been a Drop.IO user for a while, so this may be something worthwhile. I read that a windows client is available as well, where can I find it? I have both windows and Ubuntu machines. Also it seems that I need one invite for every machine I want to hook up? How do I for instance share files with a friend with a Windows machine on Planet Pork? (Windows being the bigger problem than interstellar communication....)