I see what you mean..... When you click on a specific category, if it is empty (like I said before, it's a new site and there isn't much on it as of yet) it will show no listings. Some of them are, some have some listings in them. It'll all look quite different when it fills up a little.
Pioneer Elite is a multi-channel receiver and it is in proper category (Category: Main > Home Theater > Receivers - Multichannel).
(Main) Receivers, as in two-channel, category was added couple of days ago, as somebody from the forum suggested. I initially left it out as I thought maybe I could stick somewhere as a subcategory (like integrated amps etc) but it just didn't jive.
So now, I have it as one of the main categories... What do you think? Leave it?