Google Plus is honestly the most under rated social media platform right now. We’ve all seen the picture with the coffee or donuts, there are jokes that the only people who post about those things on Google+ are Google employees. Google+ Communities are a super underrated feature. Do you want to know what pages get preference on Google? Those that have a Google+ account.
Understand that the more active you are on Google+, the more likely Google will improve your website’s ranking in search results.