Why would I want to pay so much for all of my storage when it is so unsecured? http://www.backupthat.com/ is my personal favorite for backup because it is practically unlimited and free! I have backed up 500GB of files there so far and it hasn't cost me anything.

I've been a fan of http://www.backupthat.com/ for a while now and they do something similar. You get unlimited (ever expanding) storage through your email. Essentially, when you run out of space, you just connect another email account. I've got about 500GB stored with them for free.