Google has introduced MyMaps which interestingly allows users to create their own personalized maps. This free tool allows users to make maps of the areas that they know. Moreover, the features are 'so easy a caveman could do it'. Checkout the user guide.
Google blog informs:
My Maps, a new feature that makes it quick and easy to create your own custom Google Maps just by pointing and clicking. You can add placemarks, draw lines and shapes, and embed text, photos and videos — all using a simple drag and drop interface. Your map automatically gets a public URL that you can share with your friends and family, or you can also publish your map for inclusion in Google Maps search results. We'll continue to show organic local search results with red pushpins; user-generated results will have blue pushpins. The user-created results include KML as well as maps made through My Maps.
Creating maps on MyMaps is open to all. So anyone can also create a map which is not right or misdirects other users. Lets see what steps Google will take to ensure that it does not happen.