I also started recently with online backup on rapidshare
but they deleted some of the files i uploaded (copyright protection....)
I prefer rapidshare because of speed and i think if you are looking for long life hoster rapidshare is the best.
Only protection i found is to Hjsplit files, rar password protect them and use Long Path Tool after. then you can be sure your files will stay online and protected.
Still im not 100% sure if this is bulletproof