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MIT Advertising Lab writes about a new SEO plug-in for Firefox.

SEO for Firefox is a little plug-in for search engine optimizers (optimizators?) that ammends Google and Yahoo search results will all sorts of related trivia on sites that show up in the search results. This will give you an idea why certain site is ranked higher up than others for a particular search term.

Great idea, and make sure to check out the typo generator.