Interesting continuation of the smart mobs idea expounded by Rheingold.
Wireless dating or Bluedating (from Bluetooth) is a form of dating which makes use of mobile phone and bluetooth technologies. Subscribers to the service enter details about themselves and about their ideal partner, as they would for other on-line dating services. When their mobile phone comes in the vicinity of that of another subscriber (a radius of about 10 meters) the phones exchange details of the two people (the vicinity can be a public and populated space too, like a pub, a street, plaza and so on). If there is a match then they are alerted and can seek each other out and directly chat using text bluetooth (bluechat). Settings can include an option which restricts alerts to subscribers who have a friend in common.