If you have the latest updates to BottomFeeder, you'll see that I've added support for the new Yahoo RSS searches. I haven't released it yet, but I've also added support for BlogPulse searches.

One of the things I've noticed is that the number of RSS/Atom enabled searches is proliferating - and my current approach of adding direct supprt simply isn't going to scale. So, I'm going to add support for user-definable search feeds before the next release. It's an easy modification, and ne I've been considering for awhile.