There is the argument (that I regularly advocate) that pushing out the moderation to the ends of the network (i.e., giving more controls to the end users) is better, but that also has some complications in that it puts the burden on end users, and they have neither the time nor inclination to continually tweak their own settings. No matter wh

Back in 1991, the Sierra Club’s John Holtzclaw studied travel habits in twenty-eight California communities of widely varying residential density. He found, as expected, an inverse relationship between urbanity and driving miles. But, perhaps not expected, he also found his data points distributed around a pretty sharp curve, with most of the gains