Especially if you are into nature photography. I've been a member for years and learned many of my skills there. Good nikon vs canon discussions going on in the equipment forums.
http://www.naturescapes.net/phpBB3/index.php?sid=95918ca95e901fd8bb12447faef29f4b
http://www.naturescapes.net/phpBB3/index.php?sid=95918ca95e901fd8bb12447faef29f4b