This seems correct. American culture is definitely, in many ways, more extraverted than Russian culture (the only other culture I have significant experience with), despite (somewhat paradoxically) the greater emphasis on collectivity in Russian culture, and a somewhat lesser attention paid to many classes of social faux pas than American culture. "Familiarity" is a greater social sin in Russian culture than it is in American culture.
As a corollary to this, people raised in the Russian culture generally view American social interaction as "fake".
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.