Bind your Bluetooth address to your MyBlogLog account and discover others nearby and [sic] find out if you have any shared interests. Meetspace keeps track of time spent with others so you have a running log of people to meet and things to talk about.
Note: While I describe this method using a Treo 650 as an example, this method will work with any bluetooth-enabled GPRS or UMTS telephone: Just enable Bluetooth on your phone (with Bluetooth visibility "on"), and follow this guide ignoring all the Treo-s
M. Sharifi, T. Payne, und E. David. Mobile Interaction with the Real World (MIRW 2006) in conjunction with the 8th International Conference on Human Computer Interaction with Mobile Devices and Services, Espoo, Finland, (September 2006)
M. Bargh, und R. de Groote. Proceedings of the first ACM international workshop on Mobile entity localization and tracking in GPS-less environments, Seite 49--54. New York, NY, USA, ACM, (2008)