Very nice! ETA: I'll be specific: the look-n-feel of the website is generally professional and polished. The text is short, to the point, basically ideal in tone and content.

Minor nitpick: on the What is rationality? page, the line

For example, a Perfect Reasoner wouldn’t be more confident that Linda is a feminist bank teller than that she is a bank teller, because in all cases where Linda is a feminist bank teller she is also a bank teller.

occurs without introducing Linda or discussing why one might expect her to be a feminist. We're all steeped in the heuristics and biases literature here, but this could be rather baffling to anyone not already familiar with the Linda story/experiment.

In short: possible inferential distance detected. Illogical! Illogical! Illogical!... sorry.