Just saw this on Hot UK Deals. Download the free app box.net from the app store. Create a free account and Box will give you free 50Gb of online storage. To register all you need to do is enter an email address. I've created 4 new ones just for this. Didn't want to give out my real email address.
I've done this with multiple email addresses and have 200Gb of online storage spread over 4 email accounts.
The only limit is that there is a maximum size of a single file you can upload which is fine if all you are doing is backing up your photos, which is what I'm doing. Don't want to lose those precious baby/holiday photos. Not sure what that limit is though.
