Official Google answers to common SEO questions

Question:

Is data about the sites that users block being used in ranking?

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Question	Views
Does Google see automatically generated content as a bad thing (i.e. spam)?	1,355
Is it OK to sell links as long as we use the nofollow attribute?	1,091
Do tag clouds help or hinder SEO?	1,455
I bought a domain 7 months ago. The website I put on it still doesn't show in the SERPs. Since 2000 it's had different owners – used by a co. in Oz, it's then served ads, then "for sale" with a company for 4ish years. Will it have trust issues in Google?	1,002
Does Google try to return results based on signals other than popularity?	1,563