Personally, I think we need an opt-in forum for for those of us who have been diving DIR/have training (I also feel that the DIR opt in section would require some sort of formal DIR training) and another one (not opt in) to answer general questions about the philosphy.
I just sent this off to Doc Intrepid in response to a suggestion about a DIR forum with heavy moderation and DIR-curious forum that was opt-in but publically readable less mdoerated:
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Since we're talking DIR, I'll give you a little DIR analysis...
I think you may be overthinking the problem and coming up with solutions to problems that may not exist.
We clearly have a problem with people coming into the DIR forum and lobbing the usual bombs: "...a couple guys at the dive site dove long hoses and were *******s, DIR Sucks...", "the DIR name, blah, blah, blah...", etc.
Its not clear to me that there's a problem between GUE DIR and non-GUE DIR. That seems to be invented mostly by Thal, ArcticDiver, fweber and others who are non-DIR. Yes, JeffG is a stroke and is going to hell, but being trained by AG is only the tip of the iceberg... =)
Its also not clear to me that DIR-curious divers wouldn't find the DIR forum. There may be a problem with divers asking honest questions (e.g. the current CCR question) which are unknowingly lighting handgrenades. But generally that kind of thing is going to be okay if the pot stirrers aren't around. The problem with the DIR-curious is created because that you're assuming nazi-moderation of the DIR forum will be required. I'm not sure that nazi-moderation is really solving a problem that won't be largely solved by making the forum opt-in and opting-out some of the really obvious pot-stirrers.
So, I would just make the forum opt-in. Then see what level of moderation is required, and watch for the effect it has on the DIR-curious. If I'm wrong and nazi-moderation and DIR-curious forums do need to be created, it should become obvious and then that can be dealt with after those problems are clearly determined to exist. Otherwise you're solving hypothetical problems before "diving it" to see if the problems really crop up or not.
That is my $0.02