Like search engine optimization (SEO), social media optimization (SMO) is all about getting your website and content found online. Instead of targeting the search engines, you're going after social media networking and bookmarking sites. Closely allied with viral marketing, SMO aims to spread the word about your brand, your ideas and your products and services by word of mouth, i.e. by referrals from people like you in the online places where they hang out. As in all things social, there are generally agreed upon rules of the road that can help you to understand and benefit from SMO. What are the key tools and best strategies for social media optimization?