Be patient . I also try to clear out discussion threads as fast as possible. Give it time, we'll get to you. Tease me, please me. Teasers are a good way to build up an audience, if used correctly.
Timing is also important.
If the teaser and the actually release occur so far apart that folks have forgotten the trailer, it does you no good at all. Don't give credence to oddball theories. There are two major whacko ideas that crop up on the list from time to time. The first actually has two separate identities. You will often hear folks gripe that either there's so much Ranma and SM fiction on the list that new ones on those series will get lost in the shuffle, or that there's so much Ranma and SM on the list that no other series will receive any kind of feedback.