The latest in their seemingly never-ending barrage of Google Maps updates has Google now allowing users to collaboratively build maps in their ‘My Maps’ (or ‘Our Maps’ as they cutely refer to it in their post) area. If you build a map and want someone else’s help on it, just click on the ‘Collaborate’ link and send it off to someone you know via email. You can also find a publicly shared map and edit it yourself.

This collaboration seems to be a natural next step for Google Maps after they started user profiles last month. Collaboration is one of the best parts about Google Documents – so why not extend it here.

This update comes just hours after Google announced the new ‘Terrain’ layer on Google Maps and just about a week after they allowed users to pinpoint locations on Maps’ results. They sure are busy over there.