Search Engines

I looked for information about Theodore Adorno (German philosopher/cultural theorist) on Rollyo, Mamma and Dogpile. Rollyo was the best search engine of the 3, as I found an excellent essay at the Internet Encyclopedia of Philosophy, a good short essay at the European Graduate School, and several specialized essays from academic journals (the type of information I was most hoping to find). At Mamma there was a decent essay at the Stanford Encyclopedia of Philosophy, but the site that looked most promising, mythosandlogos.com/Adorno.html, had way too many dead links to make it useful. Dogpile was primarily a list of links to books by or about Aorno, along with a few sites of basic biographical info. 0-- in other words, no graet shakes. Rollyo was by far the best search engine for this particular search. I was surprised that Dogpile didn't give me a greater diversity of links, as it is my understanding that it has the largest group of search engines to choose from.