The "where to play pinball" was something I had thought of also - You could just integrate google maps (make things easy on the dev guys) and have people post thumbs etc. thru google - you guys could just pull the code. Which would also be nice because we could update that map using mobile device - so if your out and about and discover a new pin - snap a pict - upload thru your phone - give description etc

I've done this for other client sites and its really pretty fast and nice.

These would all be public pins