Right now, the stories are indexed by date and by rating. But sometimes, all I can remember is that a specific person read it--like Wichita Rutherford, for instance--or wrote it--like Eugie Foster.
I don't think there's currently a way to easily look for things by these criteria, but it certainly would help ME, at any rate, to find some of the older episodes that I think friends would enjoy, without trying to remember what month it came out or what rating it might have been.
Of course, being able to search for "That story that was read by that guy who read that other story with the zombies" would probably only help me, so I won't suggest that one.