The "v2" torrent file format allows most of this. Some clients have support already.
All you'd have to do is make a torrent of your whole hard drive and then seed that. You don't need to publish the torrent anywhere.
If anyone else in the world is downloading any other torrent that happens to contain a file you have, they will end up connecting to your machine to download it.
All you'd have to do is make a torrent of your whole hard drive and then seed that. You don't need to publish the torrent anywhere.
If anyone else in the world is downloading any other torrent that happens to contain a file you have, they will end up connecting to your machine to download it.