Using Google Maps or Google Earth screenshots?
If you have a blog or website and you included in there a screenshot from Google Maps or Google Earth without asking for permission then you are violating the Google Permissions, that state:
You must get written permission from us to reuse any images from these two products [Google Maps and Google Earth], because we do not own the copyright to all of the imagery or information supplied on these platforms. In order to make use of any images associated with either Google Maps or Google Earth, please read the Guidelines and send in the Permission Request form.
A simple Image search for Google Maps reveals more than 3.5 million results, so I wonder how many of the websites that posted these images have received a permission (I know I breached this guideline too, but I’ll try to avoid this in the future). I guess the best way to post an image about Google Maps is to actually embed that location in your website (using the Link to this page option). Since it’s not mentioned, I assume using Google Sky screenshots is permitted (or maybe they didn’t update that page yet).