http://WizardofSEO.com
Social media marketing refers to the process of attracting attention or traffic through social media websites.

Social media is the interaction among people in which they create, share or exchange information and ideas in virtual communities and networks all done in real time. For instance, Twitter is a social site designed to let people share short messages or “updates” with others. Facebook, in contrast is a full-blown social networking site that allows for sharing updates, photos, joining events and a variety of other activities.

Social media can also help build links that in turn support SEO efforts. Many people also perform searches at social media sites to find social media content and even local businesses.