While I wouldn't put services such as DROPBOX or SKYDRIVE quite in the same category as the following (HOTFILE) it should be a salutary reminder as to what can happen to your files if stored on a Cloud server.
So even if you DO use cloud servers ALWAYS HAVE LOCAL BACKUP for important files, documents etc.
(Also you've got NO guarantee that these files have been destroyed - they could have easily been passed to FBI etc for "further analysis" -- and HOTFILE wasn't only used by "illegal copyiers and file sharers" -- SAMSUNG for example used it - they've now moved to another server though).
I certainly won't EVER totally trust "The Cloud" -- maybe it's better called "Cloud Cuckoo Land" in future.
Hotfile Shuts Down and Takes User Files With It | TorrentFreak