This bookshelf is just what I was looking for.  It divides the space for my desk without totally closing it off.  I love its asymmetry.  It makes a great divider.  
I put it together differently than the directions show.  I think it's great that there are options of how to position the smaller dividers.  This bookshelf holds a ton of stuff and feels very sturdy.  My floor is not completely level, so I'll have to level it myself (which I'm working on as you can see in the photo).  This was a great addition to my space!