Nice project!
I tried it.
My Comment:
you need to filter www/http and subdomains...
got the exact same search results from different subdomains from tube8,
jp. and .de and www.
pretty nice though.
Reminds me a bit of
Free Porn Search Engine :: pornharmony.com
that site does some awesome matching content search.
The longer you search, the better the results are.
Goodluck!