Anybody seo target keywords in google, I think google preffer in google + and also google + are Top Social Networking website.
the main purpose of a marketer is to introduce his product and increase product sell.social media network is playing a vital role for marketers both for selling and advertising purposes.through using of this site marketers can get more traffic which can accelerate of his business.google+ has a +1 button which is very much important for marketer and this page make easy for customers to recommend the products they love on your site with a single click.
i agree with you, G+ is important because of google having search engine as well as Google giving more priority to the G+.
Google+ is important for all marketing because by using the Google+ the more traffic will be increasing to you business by posting about your marketing.
I have read the status of Guy Kawasaki (one of the masters of SEO) on Twitter ... he said "Google + is the Best addition to the Social Media" .. So i think this is essential tool for all online marketers...
Google+ is the new social networking site and it is not so for popular but it is very important in marketing because Through Google+ we can get more traffic and can use for developing of our marketing through posting about our products.