I built one with a nice TUI to run on a VPS so I can try and find rare magazine torrents, but Hetzner were upset about it. I need to find it a new home. It was a very good citizen, but it still raised too many flags.
This year, I was giving it as an assignment to students. Does not take much time with LLMs.
Its algorithm is very elegant, using binary search on peers' and torrents' hashes, narrowing down to peers that are more likely to be seeders (or at least know some).
The other day it was trying to track down some older High Times issues that were torrented but the torrent is dead. Last night it was a mag titled Films & Filming which I know is scanned, but I can't find anywhere.
(no affiliation with them)