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I (finally) see the confusion - a good reason for me to be careful in word choice. I didn't say "duplicate content" I said "duplicated" content.  What I meant was "repetition" not duplicated but I guess because we see "duplicate content" every day as SEOs I chose the wrong phrase.  What I meant was the duplication / repetition that can happen in the title, as in my example: "Brisbane SEOs and digital marketing services in Brisbane | SEO | Marketing" I have many times seen replaced title/description if keywords are repeated in the titles.  I have always cleared it up with noodp and noydir.  In this case I stated that I didn't think that was the real issue but it is one that causes problems. So the examples I copied in didn't have to do with "duplicate content" as it relates to rel=canonical but it has to do with "duplicated" title keywords. Obviously I wasn't clear enough in the original post and I'm glad to know that.  I still think my advice will work and for the reasons I stated, just with better phrasing.  I definitely didn't mean to be confusing so thanks for pointing it out. Hope that clears up the misunderstanding and thanks for helping me give better advice - appreciate it. ~Matt

Thanks very much for your input. I've downloaded a trial of PowerSuite to take a look.