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Excerpt: Joost de Valk wrote a great WordPress plugin that I'm about to install. From Joost de Valk: http://yoast.com/twitter-analytics/?utm_source=twitter&utm_medium=twitter&utm_campaign=twitter has a bunch of tracking parameters on it, and therefore is duplicate … so we may cite a canonical URL in <head> to fix this — <link rel="canonical" href="http://yoast.com/twitter/analytics/"/> In this case it is the only option to do so because Google Analytics requires the page be sent, so it is not an option to simply 301 to the canonical URL afterwards. Originally I had said it was; thanks to mark @ useyourweb for pointing this embarrassing lapse in reason to me. However, with…