Executive Summary Google complements and competitors—among them social platforms—are expanding the search ad market Search is growing into a habit on social, but it is non-core to most users’ experience Pinterest, still shedding its social skin, is trying to get ready for the next phase of search behavior TikTok is trying to broaden the search habits of its users—sometimes by paying them Reddit has more search momentum than any other social network Snapchat could emerge as a differentiated...