Matt Cutts: Will changing hosts cause any SEO concerns?
Topic: Will changing hosts cause any SEO concerns? – Quick Answer: Probably not
Matt Cutts: Why don’t 404 pages disappear immediately from search results?
Topic: Why don’t 404 pages disappear immediately from search results? – Quick Answer: They may come back soon
Matt Cutts: Will Webmaster Tools give examples of which links or pages caused a manual spam action?
Topic: Will Webmaster Tools give examples of which links or pages caused a manual spam action? – Quick Answer: They can’t show them all, but in time they plan to show around 3 links in messages to help diagnose the problem
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