<EDIT #2 - This deal starts tonight at 10pm GMT +10 (Brisbane) / 11pm Sydney - aka Friday, Nov. 23 at 6:00AM CST>
CrashPlan is backup software which allows storing backups locally as well as on remote computers (e.g. friends). Additionally, a paid service is offered to store backups online.
After the year, the rates hike back up; but likely there will be some other deal.
They have Australia data-centres too.
Impressive. :D I still prefer encrypting individual files and putting them on my own server but great for normal files with low confidential importance.