HiWeeelllll.... there are some good ones like for example
Schlangenforum (THE Swiss herp forum),
Terraristik Talk (my favorite one),
Bartagamen Infos (best for bearded dragons),
Vogelspinnen-Stammtisch (THE Swiss tarantula forum), and
DGHT (THE German community for herpetology & terraristic) but they are in German; 'others' are heartly welcome as well and there are a few Denglish discussions too!
Any US-forum I've seen till now is mere scum: taming bearded dragons, keeping reptiles without substrate (hygiene = sterility), stuff them into far too small enclosures etc. People there think that we Swiss/German guys are 'loco' when we tell them how to keep reptiles near-natural and throw us out. How many in the States keep their bearded dragons in a 200x80x100 lxwxh (in centimeter!) terrarium with 500 watt high-end illumination?
I'm interested in some good US 'general terraristic fora' as well!!
Grüessli
Andreas