Cool. How? Can you elaborate on "I crawl myself." Do you mean you are the search engine and your search engine is an index of stuff you found that fits your criteria? What criteria, precisely?
[1] http://ilpubs.stanford.edu:8090/422/1/1999-66.pdf (ch. 6)
Right now it's absolutely amazing if you have like a broad topic you want websites about, but kind of weak when you want something more specific.
While yeah, marginalia finds interesting stuff, I've not been able to find anything useful that I've tried searching for with it so far.