I've been using the new /newcomments. One other thing I noticed that's missing: it's not stateful. There's no way for me to kill off some users/threads so I don't see them again. I think my query mechanisms were pretty elegant and lightweight. hystry permitted filtering conversations (rather than comments) involving specific people, and also easily blacklisting going-nowhere threads.

http://blog.hystry.com/post/20252078 http://news.ycombinator.com/item?id=83702