Maybe this is an intentional change, but today for the first time I've noticed that the list of trending topics contains only five threads rather than the usual ten (which I saw earlier today). I still see ten new threads in the list. This happened when I clicked on Forums after reading a thread. ADDED. When I went back to Forums just now, I saw only nine new threads listed, but that might be because my own news thread doesn't appear when I'm logged in.