Just saw this at Fry's B&M, if you want a good, easy to setup NAS solution, you could not do much better.
Note that this is most likely for the first edition of this product:
My Book World Edition 1
As that is the version that I got in the store.
FYI, it is very possible to remove the drives yourself. Also, it is basically running an SMB server on Linux.
Also, here is some info on how to hack this product to your liking:
http://mybookworld.wikidot.com/
I think hacking it will technically break the warranty, so do consider that before you do anything.

