Rockclimbing.com
http://rockclimbing.com/forums/

Sierra Backcountry.org
http://sierrabackcountry.org/

Teton Gravity Research
http://www.tetongravity.com/forums/

Summitpost
http://www.summitpost.org/phpBB2/

Whitney Portal Store
http://www.whitneyportalstore.com/cgi-bin/ubb/ultimatebb.cgi

Climbing and Mountaineering Supertopos
http://www.supertopo.com/climbing/forum.html

Telemarktips.com - News, Information and Forums
http://www.telemarktalk.com/phpBB/viewforum.php?f=1

Eastern Sierra Avalanche Center - Avalanche Forecast and Forum
http://www.esavalanche.org