Monday, OpenTable plans to extend its free mobile application to RIM BlackBerry smartphones. Like the version available for the Apple iPhone and Palm Pre, the app allows users to view available open tables at nearby restaurants and book them. OpenTable also enables you to get directions and e-mail invites to friends.

Also, using OpenTable for BlackBerry, diners can refine their search by cuisine, price and availability; view restaurant profile pages with detailed information, including photos; and earn Dining Rewards Points on eligible dining times.

OpenTable is a supplier of reservation, table management and guest management software for restaurants, more than 10,000 of them in the United States, Canada, Mexico, United Kingdom, Germany, France, Spain and Japan. The OpenTable hardware and software system replaces pen-and-paper at the host stand.

There's a mobile-optimized OpenTable site for users of smartphones other than the three platforms mentioned above.