Great Stowe Boyd paper on Presence as the Killer App, with some interesting observations on the unexplored terrain of presence in group context:

Groups and Projects - Obviously, people form groups as a matter of course, but the current notion of instant messaging buddy lists fall far short of what is needed for enterprise use. We can expect the automatic generation of groups from various sorts of analysis. Consider these examples: * creating a small, on-the-fly team within a manufacturing company (including suppliers) to resolve a supply-chain bottleneck based on an analysis of availability, responsibility, and expertise of potential team members (as I described in Message 3(2)); * contrast that with the creation and maintenance of large, long-term, long-lived communities of interest, such as the tens of thousands of foreign exchange traders in the financial services community (as I discussed in Message 4(1)). These two examples form two ends of a spectrum of online groups, the first potentially existing for a few minutes or hours, and the second persisting for decades.