I really enjoy shating information on Google Maps, for one thing because to me is the easiest, most practical app to find places and ways to get there. And also I love when people actually review a place from a neutral perspective.
I feel like when you are new to a city or a country, or just visiting, you really appreciate all the help you can get. Speacially when you know noone in that place. You can have some certainty in an uncertain situation or experience! Which in fact can turn an experience into great or flat. =)