Hate to say I told you so.
The future of Cloud Storage is frought with danger and uncertainty. Remember, its one thing if you keep your account under its storagelimits but its another if you go over and stop paying or if something happens to you and the Cloud vendor can't reach you.
Where on Earth Does your Data go.
See also: Do You Know Where Your Cloud Data Is?
Or: 5 Ways to Protect Your Internet Freedom
Apple co-founder Steve Wozniak is worried about cloud storage - FierceCIO:TechWatch