Brisbane.
The next speaker at ANZCA 2009 is Orit Ben-Harush, whose interest is in communication in social networks, and she begins by introducing the idea of 'friendworks': that is, a specific group of people (considered as friends) within one's entire social network. Her study traced such networks in a small Australian seachange community in New South Wales, and also especially focussed on the use of mobile phones by this community.
Social network as a term is too broad for this sort of analysis - and while friends and friendship are rather vague terms in this context, they are nonetheless highly productive. Social networks overall include family, friendworks, work-related networks, location-based connections, and online relationships, and there are overlaps between these network components, of course.