PPC-Search Engines - Publishes articles and news about pay per click search engines..
Search Engine Challenge - Provides unbranded search results from the top five search engines. You can then vote on the one you find the most relevant. All users' votes are aggregated and provided in a pie chart showing voting distribution after you vote..
BBC: Search Wars - Which is the Best? - As Microsoft enters the internet search engine market, the BBC compare five of the main providers: Google, Yahoo, MSN, Ask Jeeves and A9. (November 12, 2004).
DNS as a Search Engine: A Quantitative Evaluation - Ben Edelman evaluates DNS, Google, and RealNames for their respective accuracies in providing correct and relevant content. Research suggests that Google offers the highest accuracy. (June, 2002).