I just started playing and am confused on how the game world is generated. Portals appear on what is basically a Google map, correct? Why are there only a few portals currently downtown where I am? How are more portals added? Are they based on locations already present in Google maps? Or does taking a picture with your camera and submitting it via share>selecting Ingress accomplish this? If this is how new portals are added, does this mean every single portal that currently exists and will exist was/will be added in this fashion?