Matt Cutts: How does Google determine canonical source?
Topic: How does Google determine canonical source? – Quick Answer: content
Matt Cutts: Why are links used in ranking when they all have the nofollow attribute?
Topic: Why are links used in ranking when they all have the nofollow attribute? – Quick Answer: Interesting content gets followed links
Matt Cutts: Does Google recognize the difference between different meanings of a word in a query?
Topic: Does Google recognize the difference between different meanings of a word in a query? – Quick Answer: Google already does
Matt Cutts: How can I be notified when my name is mentioned on the web?
Topic: How can I be notified when my name is mentioned on the web? – Quick Answer: Use Google Alerts
Matt Cutts: How should I handle localized content for different languages/countries?
Topic: How should I handle localized content for different languages/countries? – Quick Answer: Translate the content, put them on separate domains