Magnet Links
You can use magnet links that can save some bandwidth
Magnet links are an alternative to .torrent files. It may save on bandwidth in terms of downloading .torrent files. I would say you could use only magnet links instead of .torrent files, saving tons of space, but not everyone knows how to use them yet, even among the "Torrent-initiated". :/
More info:
https://en.wikipedia.org/wiki/Magnet_URI_scheme