Thanks for the reminder about topiama. I knew something like this existed, but forgot where. I was thinking recently about writing my own as a quick pet project. Still might, just for fun.

It's actually a bit surprising to me that reddit themselves have not written an IAMA question-answer view. Celebrity AMAs have become a pretty big draw for reddit, but browsing them from the default view sucks. Perhaps they view it like they do the mobile clients (the community does them better), but it would be nice to have something native to reddit for this behaviour.