For all its success and world domination, Google has not had much luck with its social networking products: Buzz and Wave come to mind as recent examples. Google’s current social networking target appears to be Yelp.
Google Places for the iPhone added the ability to let its users rate places with its “Rate Now” 5-star system that ties in to Google Hotpot. As you rate more places, Google fine tunes its
advertisement, ahem, recommendations system to your tastes.
Google Places for the iPhone is a free app.
Google Places 1.0.1 (iTunes App Store)