Here is an excerpt from a great tutorial. You can read the rest
HERE
9. Start Seeding
Always use initial seeding when uploading your torrents. Don't be alarmed that your uploading will sputter along slowly at first, it will pick up and in the long run you will spawn additional peers sooner with less uploading than otherwise.
To minimise your uploading it is important to get your torrent out as quickly as possible. If you upload to someone who uploads faster than you (remember that peers upload while they are downloading) it's possible they will have uploaded > 100% by time they complete. In that case they may well legitimately stop seeding immediately.
To maximise your speeds your client should be correctly configured, you should not be downloading or seeding any other torrents, and your upload speed should be uncapped (if you're seeding overnight; which is preferred) or capped at 90% (if you're using your Internet connection while you seed).
Saw this on a forum: "Holy crap 176:1! That's very generous! May I suggest seeding much slower if you upload more races? That forces the leechers to stay connected to the swarm so they share amongst themselves more.. Could even go as far as to stop at 95% for a couple days. We're getting these races for free so it's on your terms. Hmm. if the swarm is slower, people may also be more likely to keep seeding than if the swarm is fast.. Sucks to have to use psychology to make people less greedy, but it could help the situation a little."
Don't slow seed. And don't stop seeding. It will mean that your downloaders will have uploaded over 100% before they have downloaded 100%, so they will all disconnect immediately upon completion.
Initial seeding is a much better way of achieving the same thing. Bump up the no. of connections per torrent if necessary, to ensure you connect to the entire swarm.
10. Stop Seeding
People are less likely to stop seeding if they are the only seeder.
Stop seeding as soon as additional seeds appear or availability exceeds 2.0 In either case your presence is no longer required. You can hardly complain about how much seeding you have to do if you seed when it's not necessary.