I suspect that you are asking for answers to wrong questions from a wrong crowd.
If you want to find out why people do not show up, you ought to ask those who do not show up, not those who do, otherwise it is just guesswork.
And the question you probably want to ask is "You learned that there is a LW meetup in your area, but you decided not to participate. Do you remember what went through your mind when you made this decision?"
"You learned that there is a LW meetup in your area, but you decided not to participate. Do you remember what went through your mind when you made this decision?"
I participated in a couple of Helsinki meetups, but the atmosphere didn't grab me - it was mostly geeky, slightly awkward discussion about geeky topics. Nothing that I couldn't find plenty of elsewhere. (Any Helsinki meetup attendees reading this shouldn't take it personally. I'm not blaming anyone who was present - I'll be the first to admit that I probably contributed to that atmosphere as much as anyone else.)
I think we need to have more discussion of meetup tactics on LW. At my local meetup, we've been feeling a bit lost about what works best, so I hereby propose that we have semi-regular meetup tactics discussions like the open and quotes threads.
So here's a few questions to start us off: