I really do not understand the "Favorites" tab. Today it was annotated with a little 2, which I understand to mean that two of my starred posts have had activity, or perhaps that two events of interest have occurred in my starred posts. But when I visited the favorites tab, I found that it wouldn't tell me what posts had actually had new activity:
Usually there are some beige-highlighted posts at the top of this list, and I can visit them to see what is new. (Sometimes it appears that nothing is new, but that is a separate question.) This time there were none. None of the five sub-tabs (“votes”, “activity”, “newest”, “views”, “added”) displayed anything that seemed to be new.
I think there is a UI design failure here, but I'm not sure what it is.
Added 2014-01-30: Here's today's update. Three somethings, but only one highlighted:
Added 2014-03-20: Today it highlighted Earliest precursor to category theory , but that question has not received an edit since 2014-03-02, and no new comment since 2014-02-27.