If you’re just looking for a coupon to get some extra hosting space for free, you found it, a list of coupons (that all do the same) can be found below:

If you’re just in for secure storage or easy file sharing between several computers and/or clients you could have a look at SugarSync or Dropbox. SugarSync has the advantage of support for several mobile devices like Android Phone, iPhone, iPod Touch, Blackberry and Windows Mobile. Dropbox is better integrated with the Windows Explorer or Mac Finder. Both offer a free account with 2GB storage.