Many torrents that are heavily seeded are "saturated" - that is, there are tons of seeders, but few leechers.
To get upload credits (not points), you need to be seeding torrents that people are actually downloading!
But keep seeding those "dying" (leecher-less) files! You get POINTS just for making them available.. 600 points = 10 GB of upload credit!
Look at some of the NEWEST posts - they typically get the most action!