how about free but obscure ... META-robots="noindex" , then have the crazy url that might even change - but updated for your clients when they log in ... also h

how about free but obscure ... META-robots="noindex" , then have the crazy url that might even change - but updated for your clients when they log in ... also have the url always on call - incase you need to supply it. the real solution is if your map is generating 10k +$1 a year in income pay the man :)