I have personally had a great experience using Google Plus. I am just about to reach 1000 people who have been nice enough to circle me, and I have to say the quality of engagement has been much better. I like to have intelligent conversations, and Google Plus is a great place to have them. The functionality with such things as Hangout’s, along with the importance of social signals playing an increasingly more important role in search makes Google Plus a must for any serious business today. This is a great article on the social network.