I'm going to move this thread to the Site/Forum Help board as I feel like it's more of a question than a discussion, and would suit better there.
To answer that question, it's a new system that's been implemented into the forums. Posts by users with a 25 or below post count have to be approved by staff. It acts as a precaution; making sure that the users understand the forum rules, get a lay of the land, and so forth.
Hope this answers your questions and solves any confusion!
