Check out Nokia Sensor application. It's a sociable application for spontaneous, sociable people. With Nokia Sensor you can create your own personal pages - called a folio - on your phone. Then you can check out the folios of other Sensor users nearby, exchange messages, and share files.Nokia Sensor uses Bluetooth wireless technology, which means that it works within a 'circle' of up to 10 meters around your phone. When other Sensor phones come within this circle, your phone can 'sense' them and you can see their folios and send them messages. As soon as you step out of each other's circles, you are no longer able to communicate via Sensor.Because phones running the Sensor application communicate directly without going through an operator network service, communication is free of charge. However, if you send SMS or MMS messages to other Nokia Sensor users, regular operator fees apply.

In order to communicate with others using Nokia Sensor, the Bluetooth technology settings (in your phone and in theirs) must be turned ON and set to 'shown to all'.

Checkout this flash presentation of Nokia Sensor

For more info go to http://europe.nokia.com/A4158083