If Form Follows Function, you'd expect the IKEA Billy Bookcase to house books - WRONG! Shelves are made from inferior particle board that sags under a load of books - not even a full shelf! I mean, what is a bookcase for if not to store books? I bought four bookcases to store my library and was disheartened to see shelves sagging before I'd even finished sorting my collection. Not good, not happy! read full review »