It's wrong, and it's spreading like wildfire, too.
"I posted yesterday about the Barnes & Noble Nook and then read Mitch’s post where one of his four points about the Nook not being revolutionary focused on the apparent limited use of WiFi. I just posed a couple of questions on the Nook press call and have to now tell Mitch he is wrong about the WiFi access, but he should actually be quite pleased since there are no limits.
I confirmed that you can access and purchase books via both WiFi and AT&T 3G from any place where you have access to a network, including your home WiFi network."
http://blogs.zdnet.com/mobile-gadgeteer/?p=2101