Just started playing around with it on laptop and Android phone, and it occurred to me that it could be loaded on the Nook. Not sure it would be great for ebooks if you use Calibre for library management, but probably still useful (on the road and no access to Calibre library, etc.).
If this is the first time you're hearing about Dropbox, if you decide to signup (it's free), please use this link (also shows video demonstrating dropbox): https://www.dropbox.com/referrals/NTg5NDkwMTQ5
. It gives us both an extra 250mb of online storage. Thanks.