Savvy cloud-storage seekers know they can get 2GB free from Dropbox, 5GB from Google and SugarSync, 7GB from Microsoft, and so on.
Of course, there's no way to pool all that free storage into a single, unified cloud drive. That's precisely the idea behind Backup That, a new service that leverages the space available in your various e-mail accounts to give you potentially unlimited storage.
After registering for the beta, you choose one or more mail accounts to link to your Backup That account. The latter currently works with AOL, Gmail, GMX, Mobile Me, Yahoo, and other mail … Read more