I like to contribute in google map because we live in the communication age, I want to help other people to make decisions without having to travel, to be able to make the activity more efficient.
The comments on services and places are important, but I think the images and videos can be more, because in addition to showing a place for other people to see it, you do it from your own eyes. In some way you are also contributing your opinion or your vision about it, with the added value of doing it from creativity, so that the same place can be different depending on who shows it to you.
Google map saves these different visions, making all of us, as users, participants in this wonderful gallery.