Today, Google officially announced a few new tools rolling out to Google Maps. Now, it's easier to suggest edits to locations on Maps, add places that don't exist and suggest or confirm details about a place you're visiting. Some users (including myself) have seen these features quietly rolling out for a while, but Google made them official today in a blog post. Suggested edits and missing places are the big changes. If a particular location you visit isn't on Google Maps, you can add it by dropping a pin on the map. Similarly, if you're at a place in Maps, but some of the information in the listing is wrong, you can suggest an edit.
You can also add a ton of new details about the places you go in Maps. Location listings will now ask you to describe things about the place like what services it offers like whether it accepts reservations or offers vegetarian options, as well as asking about the general atmosphere. You may also be prompted to confirm someone else's suggestions when you visit a place. All of these changes should hopefully make Google Maps' data more detailed and useful.
More ways to share your street smarts in Google Maps [Google Maps Blog]