The most benefited and lucky people are the web developers in this case. If you have good programming skills then you must try hard to develop an app for G+ users that may benefit them in some regard. This app can be a game, Mozilla or Chrome Add-on, or even a self hosted API. Just visit the Mozilla and Chrome add-ons and extensions page and you will see how much downloads are made per day for those apps. Further you can submit your app to Android Market and Apple iOS store. The more downloads/hits your app receive the more backlinks, traffic and exposure your site will get. Always create a website for your app and then submit it at stores. Once your app becomes an entertaining and useful necessity for people then they will even donate you and companies will try to purchase the product from you. Remember how angry birds guys made their way.