Kareha (in Futaba mode, at least) seems to have a bug where clicking a post number on a main page (to reference the post in a reply) produces a something like http://dongs.hadoken.net/kareha.pl/1134468901/#i%3E%3E1 in the URL bar. The link actually works for inserting post references -- that's why I'm not sure if it's a bug or not.