This document discusses how social media is used in advertising and marketing. It begins by outlining theories of branding and awareness, including top of mind, frame of mind, and friend of mind awareness. It then discusses how consumers engage with brands on social media, and how companies can build their brand and strengthen public perceptions. The rest of the document details strategies for social media marketing, including promotions, market research, branding, integrated marketing communications, strategic planning, engagement, search engine optimization, and the mobile path to purchase.