I'll give you a list of 500 social networking sites you can use to get exposure for your business/website.
Networking, creating back-links & blogging with key words are important for your SEO: Search Engine Optimization (presence) on the web. Google now places big points on social sites because of their PANDA and PENGUIN rules. The websites on this list serve a variety of purposes like blogging, bookmarking, video sharing, etc.
