Need Online Backup? Try ZenOK Free
"ZenOK Free is an experiment in a new kind of Online Backup built on the idea that you should never have to lose your documents, spreadsheets and photos (again), and you should always be able to access the file you want."
Software development company ZenOK has an interesting offer you may want to check out if you need upwards of 21GB of online storage. To get the storage space you need to either send a tweet for them or share their page on Facebook. It may be worth it to give it a try. If you do, drop back here and let us know how the service worked for you.