I am generally surprised when people say things like "I am surprised that topic X has not come up in forum / thread Y yet." The set of all possible things forum / thread Y could be talking about is extremely large. It is not in fact surprising that at least one such topic X exists.
r/Fitness does a weekly "Moronic Monday", a judgment-free thread where people can ask questions that they would ordinarily feel embarrassed for not knowing the answer to. I thought this seemed like a useful thing to have here - after all, the concepts discussed on LessWrong are probably at least a little harder to grasp than those of weightlifting. Plus, I have a few stupid questions of my own, so it doesn't seem unreasonable that other people might as well.