If likes are the new links then ratings are the new reviews. At least as far as Google is concerned as they continue to integrate elements from Hotpot into Places.
I noted the other day that Google was integrating HotSpot friend recommendations in personalized Map results. They are also now including a new rating level with an eye-catching Best Ever ribbon/icon from Hotpot on the Places Pages.
This sort of additional ego boost might just incent business owners to train their customers how to use Google Hotspot. If Google adds some ranking strength to the signal, business owners will be crashing down the gates to get the rating.
The new Google HotPot offers a more relaxed user feedback environment than Google Places, allowing for just a star rating and a quick sentiment (for hotels & restaurants) but also encouraging, although not requiring, a brief review.
Google Places has recently added the ability to add this simpler, quick Hotpot like star rating to businesses that show in the Related Places area of the Place page (When did they change the name from Nearby Places You Might Like?). The option is only available on Places that have previously received Google reviews.