Have a look at how far social media’s come over the last five years, a slew of interesting facts and some great business lessons from the most successful small biz tech startups of our day.  Here is the link for the article:   http://mashable.com/2010/07/25/social-media-resources-list/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+Mashable+%28Mashable%29&utm_content=Google+Reader

Here is a great article from Social Implications which succinctly defines 100 most common social media tools for marketing. Read this article to learn what tools might be the most effective for you and your audience.  http://socialimplications.com/101-social-media-tools-for-social-media-marketing-and-more/