Backupify has announced that it will back up all online accounts for free and with unlimited storage to all who register by January 31, 2010.

For more info., see

Backupify drops paywall; backs up your data from Twitter, Facebook, and Gmail | Servers and Storage | TechRepublic.com

and

Backupify :: Secure Online Backup and Archiving for Gmail, Facebook, Twitter, and Wordpress