Their datadump strategy is questionable. You end up needing perhaps 1 book for each shard. I guess they are made by sorting the ISBN or some other numerical field and then grouped until they reach a certain size. It is a bit annoying to put the shard of interest to download in your torrent client, pause it, figure out which book is the one you are after by looking at the ids, instruct your torrent client to only download that book.

My understanding was that's meant to be a way "ordinary people" () can contribute to the project by seeding one or more torrents with a part of their archive contents, to try and achieve a sort of "distributed backup", and it's not meant as a way for final users to get that one book they need.

() that is, people that can't run a IPFS node or other advanced options due to their limited space/network/skills/money.