These search engines are not devoted to gay sites; they have a much larger scope: the entire World Wide Web. A few of them actually have spidered up to a third of all the sites available. This category will also link to sites specializing in studying search engines, measuring their performances, and pondering about their future...This section is new and many listings will be added in the near future.

Google	Because of its high relevancy results, Google has been retained to supply results to a large number of other search engines. Google is at this time the 4th most visited site on the Internet.
Yahoo!	Originally, a human reviewed directory, Yahoo! had to adapt and provide more results than any directory, however large could supply. Currently the top dog; Google is their main competitor.
MSN	Another big player. No idea how their database is built since they offer only pay for placement options (that's Microsoft, after all).
Alexa	Search engine, powered by Google. Its most noticeable feature however is its attempt at ranking major websites. The method they use is this: they put a spy-cookie in your computer, compile the various urls you visit, and extrapolate the results to the entire Web users. For this to work, you first have to visit Alexa.com. Since not everybody does that, Alexa's results are by nature biased, but in perspective, their results are a reasonable approximation of what's going on. Interestingly enough, they hide their own ranking.