"Teams use common applications and data, but there's no easy or natural way to pool our personal customizations of those resources. Why shouldn't systems adapt to teams as well as to individuals?"
I've always wondered when we will be able to do some simple things like what Jon Udell talks about above. The first time I saw this idea in action was in Star Trek: The next generation. In one episode, as Geordi LaForge the engineer comes up to the bridge, he transfers his workstation (desktop in other words) from a station in engineering of the ship, to the bridge. We still cant do that with out computers. Though there are things like VNC or Remote Computing, its not seemless. When will it be seamless?
