I'm guessing that well over 95% of all posts are made in the News/Activism Forum, but a lot really shouldn't be the way this site has been designed. If people really started using FR the way it's set up, you'd get to the threads you're interested in a LOT faster, even with the extra click it takes to switch forums.
Jim, this brings up a point I've been meaning to raise. If the moderators would get aggressive about pulling threads from News/Activism into the proper forum, then people would start following those threads and getting used to posting in the proper forum. They'd switch forums as appropriate. As it stands now, if you want anyone to read a new article, it had better be posted in News/Activism (even it's clearly General Interest or Election stuff) or it won't get seen by people who don't realize the other Forums mean anything.
You probably shouldn't immediately reclassify a thread. Wait until enough people are hooked on it before dragging it over. The people will follow it over automatically when they click on Your Comments, and before long the folks will be used to surfing the various forums properly.