Social media optimization (SMO) is a set of methods for generating publicity through social media, online communities and community websites. Methods of SMO include adding RSS feeds, social news buttons, blogging, and incorporating third-party community functionalities like images and videos. Social media optimization is related to search engine marketing, but differs in several ways, primarily the focus on driving traffic from sources other than search engines, though improved search ranking is also a benefit of successful SMO.

Social Media Optimisation (SMO) is not limited to marketing and brand building. Increasingly smart businesses are integrating social media participation as part of their knowledge management strategy (ie. product/service development, recruiting, employee engagement and turnover, brand building, customer satisfaction and relations, business development and more).

Social media optimization is in many ways connected as a technique to viral marketing where word of mouth is created not through friends or family but through the use of networking in social bookmarking, video and photo sharing websites. In a similar way the engagement with blogs achieves the same by sharing content through the use of RSS in the blogosphere and special blog search engines.

Social Media optimization is considered an integral part of an online reputation management (ORM) or Search Engine Reputation Management (SERM) strategy for organizations or individuals who care about their online presence.