Google Advertising - Allows you to buy advertising on the Google search engine, or on other sites through its AdSense program. Includes a tour and FAQ.
InternetSearchNetwork.com - Focuses on networking their search results into other sites and search engines. Provides XML feeds to several other search engines.
Kanoodle - Distributes results to a large network of other search engines and search box providers.
Roar.com - Offers a category based search engine and advertising programs.
7Search - A pay-for-placement search engine that allows advertisers to bid on keywords. Feeds search results to a large network.
SearchBidz.com - Offer European advertisers the opportunities to bid on search terms and affiliate program.
