A form of search engine optimisation. It makes a website more easily found by people through online communities and by search engines, such as Technorati, that specialise in indexing blogs, discussion forums, photo and video sharing sites or online communities.
SMO refines a site's content to make it easy and popular to link to and share. For example, a site is more likely to become visible in social media if it offers fresh, relevant, useful content and a means to link to social bookmarking services like Digg or Del.icio.us.
Social media marketing (SMM) is closely aligned with SMO. To market in social media, website owners must participate actively in communities in a way that fosters sharing, collaboration and open communication with customers and potential customers.
