i mean about permanent storage without any responsibility from me, thats why i would pay in the first place.
All storage (and more - all electronic or financial) systems can be asked this question. What if Dropbox closes suddenly, and all your files stored in paid storage will no still been stored there? What if your bank becomes bankrupt? Really, how can you get _real_ guarantees from anyone in the Internet? If you write down all your data, put it into sealed chest and bury it... maybe you'll get your data in safe place (but what happens in case of earthquake?)