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Hello William, In the future it would be best to start a new thread for your own question, but this time I will answer this here since it is related to the one above. Yes, you should use a cross domain rel canonical tag, as it could be harming BOTH sites to have that duplicate content out there. You could rewrite the titles and descriptions for one or the other, but I would not rely on Google to "know" which one you want to rank without harming the other.