I once left a torrent on for ~three years at 50%, obviously no one seeded that anymore. one day i realised it was completed, and i have no idea when. now i only streamed my high sea amusements, i don’t even have a torrent client on anymore, but i like to think that the three copies seeded from mine (based on uploaded data) is still out there somewhere.
I think it pointed out the right direction at least once, back when i was doing tech support (xp and pre-xp). Back when the toolkit includes whole stacks of cd’s containing every driver known to exist. I don’t even remember what it is, but it was something Realtek.