Google HotPot
http://www.google.com/hotpot

Every time you rate a place on Google, we get a better understanding of your likes and dislikes: sushi or steak; coffee or tea; a quiet room with a view, or somewhere near the pulse of city nightlife. Once we can discern your tastes, you’ll start to see recommendations in your search results of places chosen specially for you, with explanations of why you might like them. As you rate more places, you’ll see more and better recommendations anywhere you search for local results on Google — at your computer or while on the go with your phone. This will be added to eCommerce Resources Subject Tracer™ . This has been added to the tools section of Research Resources Subject Tracer™ Information Blog.