In short, all accounts that you have associated with your Gmail email, in any of the Google’s service have been unified and have received a Google account +, therefore this account is considered to be an active user of Google +. Where other services are controlled. I don’t know if you have been clearer than before, but it is better to go for practical examples. Google + attractive and simple according to Google, this is the motto which describes the new Google +. If still you haven’t seen the video presentation, here you have it, it is not in Spanish but nor say anything that cannot be seen, in addition I will analyze it step by step: according to Google think that you’ll find it much easier to use and attractive view, but more importantly, you’re going to help accelerate our efforts to create a more beautiful and simple Google.