As per my understanding, it is still trying to establish itself as a social platform and not prepared much room for business development. But you can share your business information with the circle that may be somehow beneficial for you.
Google+ is trying to compete with Facebook & Twitter however the one lack still yet is the URL for example it's easy to redirect your customers to your FB& TW account like www.facebook.com/example but still Google+ don't have such feature and no API connection
Hello your site or business upload google+ improve your business. online business profit increase your business
Google+ is have Google plus local. Which means, once you put up your company profile you are more getting closer and social to your customers/clients.
google+ has introduced a new page with the name of +1 button.adding +1 buttons to your product pages makes it easy for your customers to recommend the products they love on your site with a single click.
Google+ is social networking site same as the Facebook and by posting our business in Google+ will helpful for developing our business if we have more traffic in Google+.