Earnings reports are down to a trickle, but there are a couple of interesting updates slated for Thursday. Barnes & Noble ( BKS ) is the last major bookseller standing, but this doesn't mean that it's standing upright. Analysts see another quarterly loss of declining sales. Barnes & Noble has struggled as bibliophiles have embraced digital delivery and its Nook failed to catch on the way that the Kindle, and to a lesser extent the iPad, did.