Distributed Search Engines

I recently found out about distributed search engines and think it would be pretty cool to make Epiphany ports for them. Unfortunately, I have no experience with porting, so if anyone is interested, feel free to take a look.
http://sciencenet.kit.edu/About.html?menu=simple (devoted to scientific data and runs on Java)
http://www.majestic12.co.uk/about.php (the largest distributed search engine and runs on Mono)
http://sciencenet.kit.edu/About.html?menu=simple (devoted to scientific data and runs on Java)
http://www.majestic12.co.uk/about.php (the largest distributed search engine and runs on Mono)