I mentioned that I had built a wizard for defining your own search builder the other day, but I didn't give too many details. There are a ton of RSS/Atom search builders out there - Feedster, BlogPulse, Blogdigger, DayPop - the list goes on. I had been adding individual tools, but that was getting to be a real pain. So... I consolidated down to one common UI, and added a "build your own" option. That looks like this:

So, to add DayPop, I changed the lower two fields like this:

http://www.daypop.com/search?s=1&c=10&t=a&o=rss

&q=

And saved it. Now, when I pop up the search builder I see this:

Which integrates DayPop as one of my standard choices. The information for this stuff is saved in a simple flat file that looks like this:

[SearchFeedDefinition]

wizardDescription='DayPop'

baseSegment='http://www.daypop.com/search?s=1&c=10&t=a&o=rss'

searchSegment='&q='

So you can add as many definition sets like that as you want, and add to the list of feed building options. It's checked each time the wizard is opened.