I don't know for sure
I think what have been said in this thread is all somewhat true.
I still think that there are communities here on GB, although it has split up into several smaller "cliques", like Thantor suggested with the DF-"group".
However, this also means that the community from 2-3 years ago doesn’t exist anymore as it did back then. Most of us came here solely for the RPG information (BG2 specifically for most), and found fun people to "chat" and joke around with, but over the times - as numbers has grown, but also as times have gotten darker - the fronts amongst people have become more clear.
I don't for one second doubt that the general "fear" in societies have spred somewhat into cyberspace as well, and also our little "community" here, which have pushed discussions towards more flammable topics. Terrorism, politics, religion and so on.
However, it is also the "natural" progression of "relationships" as I see it. The more comfortable people get around each other, the more likely the serious issues are to be brought up. It is like dating - you don't pull out all your fears and worries on the first few dates
Add to this the absent of some of the more "noteworthy"/high profile members of GB, and it is clear that GB has evolved from what it once was.
But one must also remember, even though new members (flock) to GB, it means that the same old topics can't continue to sustain the community. Back when I joined up, much of the discussion was related to Baldurs Gate series. And as such games grow old and the community finds no new common ground to stand on, it also means that they will start to become much more different again. I doubt there has been a game that have "united" the GB community in a manner as Baldurs Gate 2. A great portion of the games listed on GB now I've never played and likely never will - and I would think this goes for many people. This means that the common denominator for GB as a community has started to fade away. Which again is a matter of "evolution", because we all know that things move forward for better or worse.
It still one of the absolutely best boards I've ever visited out here in cyberspace, and a large part of this goes to people being much more sensitive towards others, even though some recent topics have flamed up more then we are use to here. But as for being the best community ... well - that is hard to say, but I'll always remember how the board felt a few years ago. But then again - Nostalgia can make many memories much more pleasant then they truly were