Ben Brown writes about using Rendezvous and iChat to make virtual, on-the-fly connections at conferences:

Joshua and I posted a virtual message on a message board that did not exist physically, but was tied to a specific location. He responded, and was able to take advantage of his slightly better vantage point to record a notable experience. He transmitted a digital photo, first over a wire, then over the airwaves to me, where I transferred it over airwaves then wires to a server somewhere in New York. While the notable event was still occuring, two strangers collaborated to share the event with the world, and record it for posterity. It all took about three minutes.

We live in the future.

...via apophenia