Amazon jumps in to the cloud storage game with both feet. 5 gigabytes free. 20 gigabytes free if you buy a MP3 album from them. Given that I’m bound to buy an album from them sooner or later, this is a good deal for me.
Between Mozy, Dropbox, Ubuntu One and now Amazon, I’ve got a decent amount of cloud space.
Dropbox still beats it in that Dropbox is available offline though.