I'm going to assume B&N's ranking system is just screwed up today. The number one PubIt bestseller is Tina Folsom's Lawful Escort... with an overall store ranking of #1143 (far, far higher than the books listed below it). My bestselling book is #30 on the list despite a similar ranking. And no, it doesn't seem to be a picking-on-erotica-writers kind of thing, since Tina Folsom has an erotic book at #4 on the PubIt list and at #118 in the overall rankings. I think B&N is frankly just messed up *shrugs*.