As clyde has pointed out please be careful with the level of detail you give out on your location etc.,
Please dont put personal details, your email is displayed, that should be enough if someone wants to contact you. Don't accurately place your pin if you are worried at all about someone else knowing your location. How much information you give is at your discretion.
the map can only be viewed with those who have had an invite, so I have a record of emails of eveyone that can view and collaborate. For your own safety and your bus, dont give the map address to anyone else, (a sort of disclaimer), if they want to see it pass them on to me for an invite.