I summarized the description of projects working on features for collaboration within Squeak into a page on the Swiki:
http://minnow.cc.gatech.edu/squeak.902
The page is reachable from the 'Projects' page.
A couple of comments on the discussion that also surfaced.
I agree wholeheartedly with Chris Norton about 'VR'. We have an 'RR' (real reality) that's just fine with me. What we do with our networked computers ought to be an adjunct, not an alternate or virtualization of all the rest of our world.
I do think that there are quite a few elements of how people actually collaborate in 'RR' with each other that can help computer mediated interactions.
These elements can be very subtle things, hard to see, since we just do them all the time.
To get an idea of how subtle some of these elements are, you can make a small experiment with colleagues (or ever suffering students). Have a small group of people re-arrange the furniture in a conference room -- or just have them walk into a conference room where the furniture is in disarray and watch and listen very, very closely to what actually happens. It is surprising how little explicit, coherent speech/orders/planning occur. Mostly there will be pointing, funny facial expressions, grunts, nudges, glances to see where others are looking or moving or pushing, and the furniture somehow gets arranged.
It's the in image, networked *analogues* of those elements of furniture moving collaboration that fascinate me.
...Tom M