Imagine you're in the midst of a session at a conference and want to find someone to chat with in the room (but you don't know them yet). Using iChat AV and Rendezvous, you can instantly locate each other and start chatting immediately.
Once peer-to-peer networking is established, invoke iChat AV. Make sure that Rendezvous messaging is enabled in the iChat Accounts screen (see Figure 8-4).
You should now be able to see your newfound friends in Rendezvous!