From Yammer’s website https://www.yammer.com/about/product#what-is-yammer , “Yammer is a simple real-time communication tool for organizations. Yammer was created by people who wanted a better way to connect and share with people at work. You and the other members of your organization each have a Yammer profile. Your profile information includes your photo, title, contact info, expertise and background. Yammer makes your organization a better place to work by making it feel smaller, helping people to find and meet each other, and busting silos between groups and departments. Also, because it’s a network, it becomes more powerful the more people that join.”