Big win for the “golden age of SEO”.  By which I’m referring to roughly 2001-2008 when “demand” for content (people typing in search queries) far outpaced supply (good content). Companies like Yelp and TripAdvisor (along with Wikipedia, IMDB, etc) grew huge during this period, almost entirely through SEO. They did this by getting highly defensible flywheels spinning where more content meant more SEO which meant more users which meant more content. It is now far more difficult to grow a startup primarily through SEO. Almost all monetizable search categories have vast excesses of SEOd content. Moreover, Google is creating their own content (e.g. Google Places) which, at least at times, they have favored in their search results. - @cdixon