When individual anime websites update with new torrents, they let animesuki know, and animesuki sends out a RSS feed. You can pick it up on LJ (just by friending it), then all the new anime BTs will show up on your own friends page! How keen is that?
And if you're using something like Kazaa, you really should think about switching over to BT. If nothing else, you're less likely to get sued and all that bad stuff. It's not that tricky to set up, if you need help just give a yell. (And for non-anime people, you can get all sorts of things with it. Movies, music, books, applications, any sorts of files.)