Google's local recommendation engine Hotpot is now more closely tied with Google Maps. If you are a Hotpot user when you visit Google Maps you will see a stream listing the most recent rating and review activity of your Hotpot friends.
With Hotpot, Google are making local search results for places on Google more personal and relevant. When you visit Hotpot you can view nearby places, search for local businesses and restaurants and read reviews.
With Hotpot you can share your favourite places and your ratings with your friends and see the places they’ve recommended. So, for example, if you want to go to a restaurant you can see at a glance which restaurants have been recommended by your friends.
When you now use Google Maps you will be able tell at a glance what places your friends have been visiting and what places that they recommend.
Via: Google LatLong