When I wrote about stuck systems, I wasn't looking for a bibliography system. But that's what I got. A bunch of them. One worth noting is Jonathan Otto's That's Crazy HOT!. Also this one from Devin. And a ton that were already built, which I won't get into here. Also heard from plenty of librarians about magazine articles, old books, etc. etc.
Each online solution works in its own way, but I wonder if anyone can figure out how to make the solution so viral it becomes the standard (which was the real point of the post). I'm glad to know, though, that I never have to hassle with a bibliography again!