This is just my opinion, of course, but Weight Loss Support has always been sort of a general area. Most of the posters, from my experience, are following different plans in this area-Weight Watchers, Atkins, Calorie Counting, Body For Life, South Beach, or whatever...
From what I have seen of most members here, people tend to post in a chat thread, or accountability thread in the area that pertains to their particular diet plan...and then we usually post in areas that also interest us on a personal level-things like 20 somethings, General Chatter, Exercise!, and so forth.
Because of this, I prefer to have daily chat threads, or accountability threads, in the areas that are destined for one thing. Having a daily chat thread in Support is sort of redundant.
This is just my opinion, of course.