Barnes & Noble is playing catch-up with Amazon’s stream of releases about how Kindle is bestest, fastest, biggest-selling item. BN says they have sold “millions” of Nook devices, declaring “the line has become the company’s biggest bestseller ever in its nearly 40-year history.” More interesting is that they “now sell more digital books” (presumably calculated in units rather than dollars) than printed books via BN.com. Despite technical problems (which are not mentioned in the press release), BN says they sold “nearly one million” ebooks on Christmas Day–giving you some idea of how many Nook readers were under the tree. Release […]