When you go to the forum tab, there is one thing in the UI that confuses me. The search box for the forums is right next to the start thread button.
My friends have told me this is a bit confusing. On more than one occasion, they would input something into the search box and press start thread. This may seem like a very minor issue, but the fact there is no UI element for executing a search (you need to rely on keyboard Return or Enter buttons) is kind of…lame.
my thoughts are: moving things around in that area and adding a search button, or creating a new tab specifically for searching.