Those of you who are regular PDD readers may have noticed that the comments have changed to allow threading — so you can respond directly to one comment rather than having it appear several comments below the one it is relevant to.
PDD administrators turned this function on today to see if it works good or crappy. We might get rid of it right away. We might keep it and tweak it to work better. So try not to fall in love with it or hate it too much.