DCAC is Denny Cherry and Associates, the consulting company.
There is no "PASS" anymore. I'm going to get an independent SQL Sat org, community run, up and running. The Summit will be run by Redgate and hopefully in the same vein as the previous ones. Chapters/user groups are independent, and can do whatever they choose. Many use Meetup, some WordPress, some might do other things. We used to offer dotnetnuke sites here back in 2002/2003 to user groups because PASS didn't provide that stuff.
I don't know that I'd build something for a UG anymore. Meetup works well enough.
For SQL Sat, I do need some sort of forum place where people can suggest things, add comments, complain, criticize, praise, etc. I'll try to continue hosting here, but at some point I likely need something independent.