I am new to this site (proof alone that it is not completely falling apart
) but having been on a number of other forums, I can tell you that it is just the nature of the beast. You started this thread at about the same time schools and colleges returned from summer break, and from my observations this site is chocked full of college aged kids who are probably more concerned with financial aid, aquiring the right books and duct taping the soles of their sneaker back together for one last time.
Give it some time, and things will pick back up here (and every other internet forum that has seen a decrease in activity).