I enjoyed Mensa. I went to weekends away, and evenings in the pub. I met some nice people, and some crushing bores. I took the test initially to try and boost my social life. I do not think I had more intellectual discussions than I do with work colleagues.
Sir Clive Sinclair for a time hosted weekends in moderate hotels, with dinner parties. So I have enjoyed a couple of long general discussions in a group of about a dozen including him and Madsen Pirie of the Adam Smith Institute, and he is still one of my best name-drops.
When I foolishly disclosed to an employer that I was in Mensa, every time after when I made a mistake he would say, "Mensa strikes again!", mockingly. I think being in Mensa does not give a useful signal.
I have kind of lost interest. I have other social groups to join with. The magazine in Britain is not interesting.
It's not a typical OB/LW subject, but Robin correctly pointed out that most rationalists are outside OB/LW, and so I'm asking about one of the organizations that might hold many of them.
A couple of weeks ago I took a supervised IQ test by Mensa due to curiosity and for some CV padding (cheap signaling is a perfectly rational thing to do). Now I got a letter back from them that I'm in top whatever %, and they'd like me to join. I wasn't really planning joining Mensa, or anything else, so I'm wondering - does any of fellow rationalists have any experience with them? Is it worth bothering?
As a bonus here's a quick description of their supervised IQ testing process:
They compute percentile based on both tests separately, and higher of two counts as the result. So you can has 0 points on one (if at all possible), and respectively 148 / 132 on the other, and you're in (2 stddev above mean, or top 2%). The tests obviously check knowledge of obscure English words and meanings and ability to deal with pressure in addition to intelligence as such. Well, I guess no test is perfect.
So Mensa - good or bad?