>To avoid quality issues and/or brand confusion, Customer will not use the Google Maps Core Services with or near a non-Google Map in a Customer Application. For example, Customer will not (i) display or use Places content on a non-Google map, (ii) display Street View imagery and non-Google maps on the same screen, or (iii) link a Google Map to non-Google Maps content or a non-Google map.
They have a public api via which you can extract a lot of data, geopoints with annotations about what is there exactly. I wanted to compare OpenStreetMaps tag amenities=restaurants to what google has. If I do that I will breach two points of the TOS: visualizing their data outside of their maps, benchmarking.