Go Vision Map for Pokemon GO description

You can quickly find the location of a particular Pokйmon by clicking the Filter button, or submit a new location on the map, to help others.

However, each site that you submit the card is received the thumbs up or thumbs down.
The more thumbs up your idea receives, the more it will be displayed on the map, and vice versa.
This is to ensure that nobody is going to spam the system with false places.