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Excerpt: In part I of this series we covered optimisation of ecommerce websites. There is such a lot that can be done that it is deserves a second post. One of the persistent problems with content on e-commerce site is duplicate content and this can be caused in many ways. One particularly common way is where you have several products that are only slightly different, if your product is available in different colours for example and you want to get the benefit for keywords. Nofollow No-follow values  can be assigned to particular links within the page. If you have one basic product or many…