For me google maps was a life changer and i owe all my support to google maps for all the convenience it has provided me. This way i can help make it better for others. Travelling is part of my work and i am constantly relying on reviews of restaurants,hotels etc on google maps given by other guides. So that is what i like contributing most. Giving honest reviews. Specially in my country many local businesses are trying to con people. The google review system can give us a voice to point out fakes and cons and to appreciate hard working quality local businesses.