I think this place has undergone a recent renovation. It looks pretty nice, but I kind of miss the old, homey Bookman's of my childhood. I've been going here since I was a kid, trading in and finding books. There is always something here, although I've found that looking for something specific is often fruitless. It is great for wandering around, picking out hidden gems and wasting away an afternoon.
Bookman's is the best for trades, though they can be picky - my normal technique is to take books to Bookman's, usually take B trade for them, and then take the remainder to Half-Price Books (at Half-Price, they take everything but pay pennies for it).