Given the emails that have been going back and forth, I would like to send a quick note in defense of Matt. While I understand that it's frustrating to show up and not have people there (have definitely been there before in other circumstances), I can attest to having been to another one of his events and it's excellent. Not only was it well organized but people also showed up early including the organizer. Even given my very tightly booked schedule, I do plan on finding time to attend others.
Yesterday I logged on and noticed that the event was not there so figured it must have been canceled or rescheduled. Unfortunately no notice went out or was posted to let people know (as MS Outlook sends a meeting cancellation automatically), but nevertheless I looked for a different meeting and did not show up last evening.
Just my two cents