[Stuart]

Anyone considering using a service such as this, please remember that any external service can be shut down at short notice. Whether it's because they go bankrupt or because (as in the case of Megaupload) they are found to be hosting illegal content.

In cases like these, it seems as though the individual consumer has little or no recourse.

Even a reputable, financially sound, company such as Microsoft, Google or Apple can decide to close the service with little or no notice. Although it wasn't strictly speaking a cloud storage service, look at what happened to the users of Google Video.