For years, I've really enjoyed spending time in B&N. I used to go a couple of times a week. One reason was that they had an excellent kid's section. They had new books, but also shelved of older good books..nearly all my favorite kids books were there.
Now, in kids and YA, they have new books and popular series–face out, and that's it. There are no shelves of older staple books to go browse.
SF is still the way it was, but for how much longer?