CGTalk is good, some modellers are elitist (at least last time I went there, a long time ago) but you needed care or worry about them, but there are some fantastic and insightful individuals around there. A group of people started their own forum - I don't know if they're open to the public,(besides the community there has gone a bit silent) but they invited me to their forum - and these guys are regulars on CGTalk (I used to talk to most of them on 3DWorld magazine's forum, which I would recommend, but as of late has also been dead quiet) and they were VERY helpful on commenting on my works, as were the 3DWorld community beforehand, so definitely a good bunch to get crit on.
I'd say sign up to CGTalk. Most of them are pro 3D artists, so they should provide good discussion.
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