Matt Cutts: Why aren’t paid directories treated the same as paid links?
Topic: Why aren’t paid directories treated the same as paid links? – Quick Answer: They are. Don’t use paid directories
Matt Cutts: What is the ideal keyword density of a page?
Topic: What is the ideal keyword density of a page? – Quick Answer: There isn’t one
Matt Cutts: Will Google provide a rank-checking service?
Topic: Will Google provide a rank-checking service? – Quick Answer: You can see this data in Webmaster Tools
Matt Cutts: Is Google doing away with use of the meta description?
Topic: Is Google doing away with use of the meta description? – Quick Answer: No
Matt Cutts: How do you see search working a decade from now?
Topic: How do you see search working a decade from now? – Quick Answer: More mobile and more refined