For years, the web was about search — that is, people using search engines to
find specific things online. Now, the web is shifting toward discovery — users
are increasingly letting content find them via social networks. This
trend actually started a few years ago with a number of sites seeing social
networks drive more referral traffic than search engines. With Facebook’s new
features, I think we’ll see this trend turn into a basic tenet of web
optimization, as sites will soon be able to learn so much more about their users
and offer targeted, shareable content that brings in more referral traffic.