[rules-users] expert mailing list

As the user list is now high volume, i'm contemplating an "invite only" expert list. I'm not sure who this would work, or if it's practical. But the idea is to have a lower volume list, with a higher quality of technical questions and discussions. This might make it easier for people to be engaged. I'm thinking of doing it as a google group "drools-expert-group" or something. I'm not entirely sure how to decide who gets an invite or not…. as it's very arbitrary. I guess in general anyone who gets a recommendation for someone on the list, gets an invite. But I'm open to other ideas to run this. Ideally we should be able to setup a number of moderators, that can handle this invite list, including people from the community. Although not sure if google groups supports this, need to find out. Anyway would like to here what people think, and would be interest to see alternative ways to do this. Maybe you can point to existing setups, that manage this sort of situation, that we can copy? Mark