Amazon Cloud Drive
Amazon Cloud Drive has up to 5GB free online storage and more for pay.
Another interesting bonus: “When you purchase songs or albums from the Amazon MP3 Store, you can now save your purchases to your Cloud Drive. All your purchases are backed up and available for you to download at any time. Even better, you can listen to your music from any web-connected computer with Amazon Cloud Player. And the best part? When you save your Amazon MP3 Store purchases directly to your Cloud Drive, they don’t take up any of your storage space and are always stored for free.”