Make good choices.
Why not just use the "New Posts" link (right next to "Active Topics"). It will show you all the threads with activity since you last logged in.In the new layout we are back to like 20 threads in the active topics view.
We had a change a while back I submitted to list more threads in the active topics page. Can we go back to having like 100 threads there so we can see what's going on easy again?