You can change things...

Well, about 5 months after I pointed out to Google Maps that they had the location of the New York Avenue Metro Station in the wrong place (they showed it before approximately at the equivalent of 2nd Street NE and New York Avenue, when it is located at 200 Florida Avenue, with another exit at 201 M Street NE), they fixed the location.

When you see problems such as these, report them.

It's a "little" thing, but for people who wouldn't know, it makes a big difference.