These are forums; not chat rooms. It is not necessary, nor recommended, for you to post a new thread about the same topic just for the sake of getting attention. In the same vein, it's probably also not a good idea to bump with these sorts of requests - if people were interested, a collaboration of Brawl Friend Codes in order to populate one another's friends lists would be the best way to do it.

Requests for gameplay, and the sort, are perhaps better handled through exchanging of live contact information, such as AIM, MSN, or other messaging service.