I stumbled across these online meetings just a couple of months ago, when I saw a cool demo shared on EffectHub.com made by Sergey Gonchar, the organizer of these events.
The conferences basically consist of news and demos about the latest features introduced into the Flash & Adobe AIR platforms.
The next meeting is happening in 2 days and it will be my first live attendance. I’m really excited because there will be 9 speakers and half of them will be talking about Stage3D topics.
Conference page: http://gonchar.me/stage3d/ (here you can find links on the previous meetings)