There is no denying that social media has changed the way that businesses interacts today. Many businesses have not caught up with the demands of the new business world, and have allowed social media use to slip by - but not using social media efficiently and effectively can almost certainly cost a businesses heavily, especially in the B2B world. Here are five social selling secrets for LinkedIn, Facebook, Twitter, and other social sharing sites that will increase business-to-business sales productivity for a company forever.