Facebook: Create Filter for wall

I post 'articles' on my wall, each of which begins with "NEW FEATURE" or "BUG FIX" or "HINTS AND TIPS" (and a couple of others). I need a Facebook app that plug into my wall that will allow those viewing my page to click on a button which in turn will filter those posts and allow the user to view only those articles that start with 'NEW FEATURE' or 'BUG FIX' or 'HINTS and TIPS' etc. (and which therefore, filter out the rest of the postings). So, when a visitor comes to my wall, he can go directly to the topics that interest him. (My thought is that the filter button (or dropdown) will be in the button cluster in the left side of the public FB page.