First, the forum is a little odd in that there is no clear indication as to why there is no Reply option. Is it closed? Who knows.
Second, touching upon that is the basic issue of intuitive design. I never understand why someone must reinvent the wheel when such fine software is readily available.
Third, no mouse-over pop-up info with any of the page icons.
Aw, well. Maybe you can add some of the problems you've noticed here.