There’s a loosely-affiliated community of aspiring rationalists called the Less Wrongers. The old website which was the focal point of the group is http://www.lesswrong.com and the new site, just a couple of months old (the beta version went live in September), is http://www.lesserwrong.com. The community’s goal is to learn how to think better.
A lot of the people in the community strike me as kind of fuck-witted, and all of them strike me as fuck-witted at least some of the time, and there is the usual problem of objective institutions not being a Nash Equilibrium, i.e., they are infiltrated, hollowed out, and converged by people with agendas wearing the original organization as a skinsuit.
They are continually improving. They’re already notably more mentally competent, on average, than they were just a few years ago. The rate of change is certainly positive and significantly away from zero. This community, for good and ill, will bear watching.