If you have a bar, restaurant, or comparable venue, you should be aware of FourSquare, a mobile social network.
An interesting review of FourSquare was posted today by Trisha Duryee MocoNews.net.
In essence, people use their mobile devices to “check in” when they arrive at a venue. This allows friends to locate each other and congregate at the same places. It also allows people to meet new people who are also members of FourSquare. And it allows venue owners to track customer’s attendance.
Interestingly, Trisha Duryee wrote that on one occasion after she checked into a venue a different venue she had been frequenting messaged her offering a special deal on drinks just for her and her friends.