Different Algorithms of Different Search Engines

Almost all search engines had the same algorithm except exclusive search engines like Cuil and Powerset. I still can’t understand what’s the basis of Cuil until now. While in Powerset, you can only search Wikipedia articles and nothing more. It’s like a separate search engine built for Wikipedia and only for Wikipedia. Even if Wikipedia has their own search form, Powerset still strives to exist to be an exclusive search engine for Wikipedia. But I have nothing against Powerset, because it’s cooler and was pimped up with great features and enhancements compared to the normal Wikipedia search form.

Other major search engines such as Live, Yahoo and Google had also similar algorithms. The number of links pointing to one permalink or domain is a great factor in ranking a specific web page. However, as what I observed in Yahoo search, they manually add websites to rank higher if they think that the specific website is a more reliable source of a certain information that users are trying to find.
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