I've linked to Ben Hyde's weblog a few times, and here again: if you don't subscribe, you should (then I can stop pointing over there and saying "wow").

Two interesting things to read now: Ping/Poll, a fascinating look at the scale dynamics of notification -- in the weblog world, the two oppsite mechanisms of "ping" and "poll". And, also related to power-law distributions, Team forming in power-law contests, with the novel observation that "games with a inequitable distribution of winners creates powerful incentives to form teams". Now there's a lesson for groupware design...