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,
Microsoft Entourage Spotlight search engine and AppleScript; however, the use of a monolithic database made it difficult to back up incrementally with Time Machine. Entourage also maintained a separate address book, but allowed synchronization of contacts and calendar events through Sync Services. Unlike the other applications in the Mac version of the Microsoft Office suite, Entourage did not share a name with its Microsoft Windows counterpart. Microsoft claimed that Entourage was intended "to address an entirely different audience". Entourage had its origins in Outlook Express 5 on the Mac, as well as Claris Emailer and contained "no ported code, and no Office