SEO- Search Engine Optimization and SMO - Social Media Optimization both are the part of SEM search engine Marketing.
In SEO you can use onpage and offpage optimization and generate ranking in the search engines by using title tags, meta tags, keywords tags, keywords density content modification, cross linking, using images alt tags, heading tags etc.
In SMO you can use and target your products or services through blogging, book marking, Video sharing etc. through using network sites orkut, facebook, twitter, my space etc. These all the services help to increase traffic on the website.Social Media Marketing pr