Recently, from my experience this is how I maximize the use of Google+ as a potential traffic referral. Fan page - follow the related fan page and from there keep on posting commenting interact in the community to be known or to get noticed. Add/join the open community related to your niche use the +(name), +(fan page), +(circles) to make your post to be noticeable. make your profile publicly available. post contents which are very useful to other to make everyone follows you. Things that I have mentioned may not be effective but sometimes you just need to believe that it will happen.