Search Engine Roundtable and RustyBrick
Barry Schwartz is the founder of Search Engine Roundtable and CEO of RustyBrick, and his importance to SEO comes from his extraordinary ability to document the industry in real time. He is not mainly known as a consultant, but as one of the people who consistently tracks Google updates, ranking volatility, search community discussions, official statements and small changes that later turn out to matter. In an industry where information is often fragmented, his work has made Search Engine Roundtable one of the places SEOs go to understand what is happening now. That kind of daily industry memory is extremely valuable.