Search engine marketing Search engine marketing Search engine marketing (SEM) is a form of Internet marketing that involves the promotion of websites by increasing their visibility in search engine results pages (SERPs) primarily through paid advertising. SEM may incorporate search engine optimization (SEO), which adjusts or rewrites website content and site architecture to achieve a higher ranking in search engine results pages to enhance pay per click (PPC) listings. In 2007, U.S. advertisers spent US $24.6 billion on search engine marketing. In Q2 2015, Google (73.7%) and the Yahoo/Bing (26.3%) partnership accounted for almost 100% of U.S. search engine spend. As of 2006,
The Metaphysical Engine, or What Quill Did titular character few favors." The Metaphysical Engine, or What Quill Did "The Metaphysical Engine, or What Quill Did" is the seventh episode of the British science fiction television series "Class". It was released online by BBC Three on 26 November 2016. The episode was written by series creator Patrick Ness and directed by Wayne Che Yip; it acts as a companion piece to the previous episode "Detained", also written by Ness and directed by Che Yip. "Class" follows four students of Coal Hill Academy and their alien teacher, as they deal with various alien threats. The episode takes place concurrently