I gave up on B&N when they became actively hostile to their own users. Removing download links for epubs, playing games to keep you from getting it any other way, changing from their "social encryption" to randomly generated keys, all for the specific purpose of making it impossible to keep an archive of your purchases, so that you have to rely on B&N to reload stuff if you replace a device (and you can only do so on their devices, or using their reader). All while losing hundreds of millions of dollars, and looking like their were going out of business any day now. Fuck 'em.
I hate Amazon's business model on ebooks, but it's still better than B&N shitting all over me.