Apperantly if i understand correctly programmers using node.js have been able to combine a chess AI based on the number of people who visit their site.
I'm not exactly sure, and its in development but you might give it a try
its here :  http://chessathome.org/

an article about how it works :
http://sylvainzimmer.com/2011/09/06/chessathome-building-largest-chess-ai/