Google+ is not the most amazing platform the world ever created but when you look at what else Google have created you can forgive them for it. With that in mind you should also not be too quick to discount it. It was created by Google and therefore can never be totally ignored. It wasn’t as successful as people first thought it was going to be though.
This is a quick overview really of a platform that is not central to your social media strategy. There is still plenty you can go optimise on it but we would never recommend discounting other social media platforms ahead of Google+. The PDF will tell you more.