Are you leading or part of a small group, team or  organization that could benefit from sharing updates, files, links, events and the like on a private network? If you’re intrigued, but are not interested in hassling with layered, expensive or complicated apps or sites, there is a simple solution. The cure for what ails you is yammer. Yammer is a business oriented private social network. It’s a freemium app, which means it’s free for basic usage and a little extra for the full feature set. Once you have your group, team or organization connected, you can privately share share and collaborate with one simple app. It couldn’t be much easier to setup, use and stay connected since you can access it via the web, your desktop or a mobile app. Setting up the missing piece: Yammer groups are based on domain names (the stuff after @ in your email…