Since 1993, USA Today has compiled a weekly list of best selling books, published every Thursday. This list is based on sales data the paper collects from retailers. As of July 2009, the list factored in Kindle eBook sales. As of today, the paper has added data from Barnes & Noble and Sony to represent sales on the Nook and Sony Reader.
While the key at the top of the list does show an abbreviation (“E”) for eBooks on the list, that is only used for eBook-only books, or, it would seem, books whose ranking depends on the eBook edition, of which there are very few on the list, understandably. The first time an “E” pops on on the list of 150 best selling books is at position 136, for Tami Hoag’s Deeper Than The Dead, a thriller from Dutton.
The inclusion of eBooks on the USA Today list, of course, doesn’t show that everybody’s buying eBooks, but it does remind the culture at large that eBooks exist, and they’re gaining in importance and popularity.