Individual instances of exceeding the geocoder quota or speed limit give error 620 but I believe that persistent abuse might possibly cause Google to return 403.
See: http://code.google.com/apis/maps/faq.html#geocoder_limit "If excessive geocoder usage continues, access to the Google Maps API geocoder from this IP address may be blocked permanently." -- Mike Williams Gentleman of Leisure -- You received this message because you are subscribed to the Google Groups "Google Maps JavaScript API v3" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-maps-js-api-v3?hl=en.
