also make sure your torrents are actually seeding, and not queued.
many clients default to only having a certain number of active torrents at once, which is not ideal. disable torrent queues and seeding limits.
because what you want is to have good chance that you're actually seeding something someone wants.
easy way to check this is to see how many torrents you think you're seeding on the client, and check on the top of the gtru page to see how many torrents the tracker thinks you're seeding.