Hrm, if that's the case, then I guess effectively, you can have machines being the connector that gets people together for events and party plans, since it knows who's where, it should be able to match people together based on the history of places they've been.
Though that doesn't bother, what does bother me if that algorithm got rigged somehow, and someone could engineer and direct the flow of people in physical space and in social space.
http://strangemaps.files.wordpress.com/2007/02/newyorker2.JP...