The
BBC mention an interesting project combining short range wireless system Bluetooth with the all-conquering social timewasting networking site Facebook. The idea is that your bluetooth phone looks for other devices around it and sees if the owner is on Facebook
via a tool called Cityware.
The Cityware site kicks off with "The goal of Cityware is to develop theory, principles, tools and techniques for the design, implementation and evaluation of city-scale pervasive systems as integral facets of the urban landscape." And frankly it
doesn't get any less buzzwordy or pretentious as you read on.
Fascinating stuff tho' -
read all about it.