Google Co-op – Custom Search Engine: Create your own customized search engine with Google. Google will even let you add your own AdSense code to make money from your searches. [EDIT] I had posted the search code on this post but decided against it. Visit the custom search engine I created here. More information and discussion all over the web, including the official Google Blog.
Submit you CSE url at coopdir.com or any other directory for cse you might find. It is easier for people to find it.
Google has its own co-op directory but i dont know how you can get accepted.