Transmission (Since version >=1.2*, everything was OK with 1.06) and newest deluge (deluge 0.5.9.3 is almost perfect in this) better learn how to download and upload quickly, than showing numbers of seeders.
I agree too. I know that seeders are people who have 100% of the torrent files. If I see a healthy amount of seeders (eg. over 50), then I usually stop, to save bandwidth for the other torrents that need more help with seeding.