Not only does v3 not require an API key, as of Sept 28 (a couple days before the rate limiting went into effect) sending a v2 API key to v3 will cause the reque

Not only does v3 not require an API key, as of Sept 28 (a couple days before the rate limiting went into effect) sending a v2 API key to v3 will cause the request to fail: http://groups.google.com/group/google-maps-js-api-v3-notify/browse_thread/thread/46666c2d61f8bf66 http://groups.google.com/group/google-maps-js-api-v3-notify/... Sounds like they're laying the ground work for v3 to use API keys again.