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I manage several online web projects that have no link to each other. Now my question is if it will have any negative impact on ranking if I administer all those webpages with one account.

Usually google penalizes sites that are obviously linked to eachother. Is administaring several sites with one analytics account reason enough for google to penalize my sites?

I would like to know if anyone knew if the relevance of a page changes if I bold the first few sentences. Our journalist wants to bold the first few sentences in every article to make it easier to read, how does that affect SEO?