Yelp for Windows Phone 7 now available to the European and American customers and they can now use the features of the Yelp on their WP 7 mobile for locating the various restaurants, shopping malls and bars in the near vicinity. Moreover, it enables you get access to the reviews for some businesses and photos. You can also view the maps and directions to the places of the destination. The yelpers have been enjoying the facilities for the past many years and this new development has added WP7 users to enjoy the same.
Just search for the Yelp App in your windows marketplace or in Zune WP7 Marketplace.
Looking for more apps for WP7, Check this post 20 WP7 Apps You Must Have.