This suggestion is almost certainly more trouble than it's worth to implement, but sometimes someone will mark one of my older posts as a "favorite". The problem is that the list of "Favorited by Others" posts is always sorted in chronological order by posting date, so it's kind of tedious checking every post in the list one at a time in order to figure out which one has been most recently added as a favorite.
If you could sort the posts by "favoriting date" (i.e. the same way the "Favorites" list is sorted), then it would be much easier to identify new favorites.
As vain as this is, I'd like this too.