Move over, Google! I’ve recently been looking at Feedster, and realised how insanely powerful it is. It has a bewildering array of options (thesauras, regex, soundex functions and more), and a highly up-to-date index.
While it’s ranking algorithm might not be as good as PageRank, it certainly makes up for it in the amount of things you can do with it. I hope the API documentation goes up soon, I’d seriously consider using it for my site search.
I’ll also soon be loading my entire archive into their system (via RSS), which will make an interesting off-site back-up.
Anyway, good work and good luck to those at Feedster.