I found this post made by YOSHIE and I think it's good to share here with you, although apart from Bitcointalk.org and altcoinstalks.com I have never really joined rest forum listed due to personal reason or not fully associated with gambling site that much. Just picking interest gradually from this forum but with time I could tried it out to see it was is.
Bitcointalk is the first real forum experience that some of us have had. I mean, I was on Reddit before, but not as active as I am here in the forum.
Seeing the other list of forums, I will selectively explore some of them to see if they are as organic and with traffic as BitcoinTalk.
Of the many forums, especially gambling forums, Bitcointalk is the best because we find other forums less user-friendly in terms of interface (or maybe I'm just not used to them yet).
In my opinion, organic traffic on Bitcointalk is better than other forums, but we still don't know how much traffic this forum gets.