Anybody checked out skydrive by Microsoft. You get 25 free gigs of space online. home(dot)live(dot)com
The URL is http://skydrive.live.com I really like it and have backed up all kinds of files there. It's safe to upload files there, because Microsoft has loads of cash, and your files would never be lost. The only restriction is that maximum size of any file, to be uploaded can be 50 MB.
"maximum size of any file, to be uploaded can be 50 MB" that's why most people will not use it for main purpose
SkyDrive is not meant for hosting copyright material. You can share other stuff with your friends, though.