Thanks all for the info. I think we'll pass on the whole thing. 
I'm currently reading our book group's latest choice, The Sea Captain's Wife.
Ohhhh, looks like a great book. Let me know your thoughts when done, please.
How does that work? without an internet connection?
My understanding is that it actually places the item in question onto the drive of the iPad. That means it will take up what limited space you have available on the iPad.
If you don't "star" it then it has to use the internet to refer back to the copy on the DropBox mothership.
For many of my items, I only need them accessible for the duration of my trip, so I will later delete them, freeing up space.