Online Backups - a list of 17 unlimited ones

From
http://pcsupport.about.com/od/software-tools/tp/unlimited-online-backup.htm

Backblaze
Crashplan Unlimited
Carbonite Basic/Plus/Prime
SOS
Zoolz
Livedrive
Cyphertite
Nomadesk 
Bitcasa
AltDrive
McAfee Online Backup
OpenDrive
Iozeta
Backup Lizard Unlimited Backup
NitroBackup
Mevvo
MyPCBackup Unlimited

Also, I would image Adrive and other such sites could be used.  Also ftp sites and hosting could be utilized.  For instance, get yourself an ftp site and use Syncback to sync files up there yourself.