Social Media Marketing (SMM) combines the goals of internet marketing with social media sites such as Digg, Flickr, MySpace, YouTube and many others.The SMM goals will be different for every business or organization, however most will involve some form of viral marketing to build idea or brand awareness, increase visibility, and possibly sell a product or service. SMM may also include online reputation management.
Social Media Optimization (SMO) is a way to optimize websites so they would be more easily connected or interlaced with online communities and community websites. For example allowing RSS feeds, easier linking, incorporation of third party community functionalities like Flickr photo slides and galleries or YouTube videos.