Hauntworld Magazine is mainly for haunted house industry professionals, however, I've subscribed for years. (Granted, I used to be a professional haunted house employee and owner.) Thier website contains an overwhelming amount of resources, including haunt industry forums, many professional prop companies, and more. Be warned though, this is a fully commercial site, and most all of it's resources are commercial companies advertising in the magazine and website. That being said, Hauntworld has become the premier source for real, in-depth haunt news and information.

Check it out at http://www.hauntedhousemagazine.com/