I'm assuming the reason people would say "yes" is because having a forum dedicated to Baldy is a convenient way to find out about snow and ice conditions.
I'm assuming the reason people would say "no" is because these other message boards already have people discussing Baldy, and another forum might make things more complicated.
http://www.mt-whitney.info/viewforum.php?f=24
http://www.summitpost.org/phpBB2/viewforum.php?f=14
http://members.boardhost.com/sgva/
There may be other reasons...