are there any really popular forums/message boards that support all catergorys?
108127
one of the another good forum that I know is techrepublic.com. A simple search can you give a number of result, but check out activity on forums that can help you to find exact one.
1136162
http://forum.mxit.co.za/
794903
delphiforums.com\nbravenet.com
274019
Dennings http://www.denningsgarage.com/ gets recommended on this thread http://www.forumsireland.com/showthread.php?t=1207
43316
the one and only forum you should conscidere is phpbb. It is free, and widely used all over the world..argh and did i mentionned a piece of cake to install :)
89362
yahoo is good. have you tried mIrc or ICQ? www.mirc.com or www.icq.com
608622
try\nreformelections.org
125761
There is a list of most, if not all, Yahoo services (servers?) Hope it helps.
789138
Does this forum appear as information section for the aforesaid channel?
1167739
Try some of the yahoo user groups, the adult ones.
6885
http://www.big-boards.com/  This rates the most popular message boards around...  It doesn't give you a market share idea exactly, though.
411760
Try Simple Machines Forum:\n\nhttp://www.simplemachines.org/\n\nIt has a rating system for users (they call it "karma") and posts.\n\nAlso, vBulletin (not free) has a thread rating system:\n\nhttp://www.vbulletin.com/
756321
It would be helpful if you listed more of your interests.  A lot of forums focus towards one activity (but have general forums to chat about other thins as well) such as video game forums or computer forums.\nI just found one called "SyberMoms"\nhttp://sybermoms.com/forums/\nMaybe you'll meet people you like there?\nThat's all I've got, but if you don't like SyberMoms, you can go here:\nhttp://rankings.big-boards.com/?p=all\nand see if you find anything you like =D.
858879
It depends on who is going to be hosting the forum.  There are free forums out there but you get the most features if you purchase your own web space with asp or php capabilities.
1178188
http://www.catzone.org
399137
There are THOUSANDS, literally.  You have to be more specific about what you're looking for - what topic area?
554220
Check out the message board in the link below.