Depends where you're looking. pg seems to be common to the south. However, up at the north there are a bunch that are all gwenhyfaer, while to the west is joshwa and Readmore. Which makes sense, since the plot tries to cluster by common commenters along the angular direction.

I chose this criterion mostly so you could see who's participating in other threads similar to the articles you like.

Doesn't seem to be working correctly on my browser then (ff 2, XP). Commenters do not always load correctly and sometimes requires clicking back into one of the links. In the end, I'm not sure I'm seeing what you are seeing.

Umm scratch that. Just now figured out how it works. Sorry.