1. This is the most important one: READ the description of the directory BEFORE submitting! If it's a niche directory and your site has nothing to do with that niche, save yourself the time - case in point: your web design site or webmasters forum is not going to be accepted into a health care directory - did you not notice that there are no other such sites listed and that there isn't even a category for such sites?

2. If you have already received the rejection notice for your site, where it says you do not meet the criteria for inclusion, why would you think that re-submitting it five times will get a different result?

3. You don't need to submit the same site five times in three seconds. Once is enough. You won't get five listings out of it.