re: well structured meeting, I guess people stopped their talk right on time because at the beginning of the meeting Takesako and I clearly asked all speakers that they shouldn’t extend the talk too much because we had too many talks and there was a limit of time using the venue.

Attendees being quiet during all talks is very common here in Japan. The only exception is dankogai, obviously

The reason why most lightning talks are serious and not like standup comedy (like we actually saw in past YAPC::Asia’s) is also due to the fact that there were too many talks. They originally submitted their ideas and we assigned them only 5 minutes because there were too many. The only exception would be stuff like Takesako’s crazy image hack, which is originally planned as a lightning talk and hence so much fun.

In Japan sexually explicit content is banned in a public place, and female nipples are one of them. Displaying them without covering stars might be considered a sexual harassment. I guess it *is* a harassment anyway even if they cover them, though :p