I think that a forum is used to discuss problems or interchange information. I know I have no rights to interfere in others' behaviors, but I personally think that such post with one sentence "thanks for sharing" should not be posted that often.
If you think that certain topic is important to you, just reply it and provide your information or list your probelms. It really wastes spaces to post only one sentence that often. We all feel happy for poeple who get admissions but just leave the "congratulations" job to other people sometimes or it really looks annoying when almost entire page is posted by the same one or two person and readers can easily suspect the post is "tks for sharing".