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Thanks both. Very useful and much appreciated.

No need for a long explanation, just don't use it. I don't think it will help you at all and all you'll do is increase your risks of getting a penalty...and throw $99 away.

Thanks guys. I feel confident that this is not something that is a must (especially as it doesn't look like my infographic has been particularly loved out there) but when i have a spare mo I think I will add the code Linda suggested to the head of the page its on.