Map feature request!

I would like a feature where you can post a link (i.e. on the forums) to a specific location that will show up on the map with a single click of that link. So you don't have to do it manually by choosing first the right map and then add the correct coordinates yourself.

How this could be done is by a button in the map interface from which you can share the current location. I guess this feature already kinda exists although hidden from users...

This would greatly help us to share various locations and save us from troubles to explain how to find things. So please improve this already so powerful tool!