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The notices in the SEOmoz PRO platform are just that - notices. They are neither good nor bad in themselves, but we want you to be aware of them in case the issues are not supposed to be there. In the case of comments such as yours, there are very legitimate reasons why you wouldn't want these crawled or indexed, depending on your situation (duplicate content issues, link to spam, etc) If you are aware why the issues are appearing, and comfortable with your reasoning, it's perfectly fine to have notices in your account.