Cucku initially creates on your hard drive an encrypted copy of your files. This copy will then be sent, in a totally secure way, to the hard drive of the friends that you choose, as long as they agree. The backup data will only be able to be recovered by you, and nobody will be able to have access to its contents, not even to the name of the files that said backup contains.
If you want to perform periodical backups, you will also be able to do so. Program them and Cucku will perform them automatically, so that you don't have to worry about anything. In this way, you will keep your important files save against electrical failures that may damage the hard drive, accidental deletion or infection by a virus.
Cucku is a new way to perform secure backups, and moreover, it's free.