There should be really no doubt anymore on the weight of Social Media sites for marketers and advertisers alike, but is it all hype?  How many people really click those ads on FaceBook compared to how many buy from such a site? According to Knowledge Base only 5% social site users have ever used a social site to help them make a buying decision and only 16% of social media users say they are more likely to buy from companies that advertise on social sites. .. hmm.