Matt Cutts: Are nofollow links irrelevant?
Topic: Are nofollow links irrelevant? – Quick Answer: They’re irrelevant to search engines, but worth it to get visits
Matt Cutts: Is cross-linking websites bad?
Topic: Is cross-linking websites bad? – Quick Answer: If the websites are relevant then a small number isn’t an issue
Matt Cutts: Does Webmaster Tools have an API?
Topic: Does Webmaster Tools have an API? – Quick Answer: Yes
Matt Cutts: Should I be worried if a couple of sites that I don’t want to be associated with are linking to me?
Topic: Should I be worried if a couple of sites that I don’t want to be associated with are linking to me? – Quick Answer: No, contact them and ask them not to link to you then disavow them using the disavow tool.
Matt Cutts: Should I use nofollow in links to my disclaimer and privacy policy?
Topic: Should I use nofollow in links to my disclaimer and privacy policy? – Quick Answer: You can if you want, Matt wouldn’t bother