Barnes and Noble Library

I was at the Barnes and Noble again yesterday and all week I've been surprised by the amount of people that hang out at there during the day. Just sitting around, reading the books and not just for a short period of time, I'm talking hours. Why would you spend your day at a Barnes and Noble? Doesn't anyone use the library? How can they sell their books as new when people are reading them there? Wouldn't that be considered a used books? These are the things that I was pondering while I should have been concentrating on justification.