Nothing special, only good for text. The best way of storing data out of the way from your personal computer, but a very bad idea and very expensive since computers these days aren't just tools. They are personal datacenters for music, video, etc. and Cloud Computing is only good for low quality media and basic text which computers have been doing that since the 1980's. Everybody says its great because it is secure and stored away from you and I agree, but really. Its not.
Music producers and Multimedia experts will face nothing but disappointment when using cloud computing. If you write stories and just want to save your stories away from your computer and access them from anywhere, then its fine, but really. Having your stuff on the internet, encrypted with a password doesn't mean security can be broken. It can.