Social media sites are so hot these days. The biggest social media sites like Facebook, Twitter, YouTube, LinkedIn, Digg, and Delicious are gaining hundreds of millions of visitors every month. Thus, these social media sites have seem to be great tools for building traffic and make money online.But the big question on many people mind is: Are these websites really useful for generating traffic and profit online or just a waste of time?David Riklan from SelfGrowth.com has the answer for you. David has spending months of time studying the social media marketing and interviewing with a lot of experts in this field. He even began to use and test social media marketing himself to see if it is really working. Well, the result he got is great!David decided to share what he have learned and experienced...