Wikipedia Philly Meetup    I noticed that the meetup got postponed if I remember correctly for the th meetup I was a part of everything on a date and time was pretty much set a couple of weeks at least in advance that way it gave time for everyone to say if they were going or not  I know for this meetup the date and time was only done about a week in advance  Unless I was incorrect about how the th meetup was planned and everything and the response for the th meetup was just not there maybe you should try to have the date and time for the meetup set a bit more in advance that way people can plan accordingly and have time to get their replies in on if they are going or not