Here’s a list of the glassworking forums I visit and recommend. (If it’s not on the list, I don’t recommend it!!)
The Melting Pot aka The GLDG http://www.thegldg.com/forum/index.php
Craftweb (furnace glass) http://talk.craftweb.com/
Hotglass Forum (Glassline magazine) http://www.glassline.net/forums/index.php
There are other forums out there as I’m sure many will comment about, but this is the list of the forums that I personally like and recommend to people. I won’t bother with a list of the forums I don’t like, those should be pretty obvious, don’t you think?