Matt is obviously taking advantage of serial link bait, since we have yet more videos from him answering webmaster questions. This time he discusses analytics and its effects on SERPs, duplicate content, safesearch, hyperlinks in option elements, and he even answers my question, which was to define some terms that may confuse the average non-Googler. He discusses the differences between index updates, algorithm updates, and data refreshes, and touches upon the data refreshes we saw in June and July.
I'm starting to get used to seeing Matt first thing in the morning while I drink my coffee.