There was a paid version of something like this called Digital Lifeboat. IIRC it ran on top of the BitTorrent protocol, and users would store some pieces of oth

There was a paid version of something like this called Digital Lifeboat. IIRC it ran on top of the BitTorrent protocol, and users would store some pieces of other users backups. It didn't really catch on and shutdown a few years ago.