AOL has launched a free utility for online storage called Xdrive. They'll give you a whopping 5 GB (which is pretty good). The service is free (for now it appears) as it doesn't charge you or ask for any payment info. But the login screen does allude that they may ask to charge in the future (you won't be billed automatically).
“With your 5GB of secure online storage there's plenty of room to keep backup copies of digital photos, all your important documents, e-mail attachments, and other files — and still have space leftover for your music collection. It's the best way to keep computer crashes from becoming disasters. Think of it as hard drive insurance.”
In that vein, it gets even better. When I logged in, they upped it to 50 GB for free. They offer free software for Windows users that lets you mount the Xdrive as a volume on your desktop. But Mac users can still access the service through a slightly more clunky web interface.