As others have said, Watch Duty is new and setup as a reporting site rather than an interactive site with IA,Q&A etc. . The former forum, and this current site provides a lot more direct links, commentary and insight on current fire behavior, fire history, terrain/fuel loading and weather influences on continuing incidents. This, along with people sharing their combined fire fighting experiences and knowledge of current, and former, boots on the ground makes, this site very relative IMHO
Both have their, place but this is my go to spot for more in depth knowledge of current incidents