Galleycat brings news of George R. R. Martin's runaway success:

Novelist George R.R. Martin reportedly landed the highest first day sales of a fiction title this year, selling 298,000 copies of A Dance with Dragons. That figure included: 170,000 hardcovers, 110,000 eBooks and 18,000 audiobooks.

I'm willing to bet that next year's record-breaker for highest first day fiction sales will sell more e-books than hardcovers. E-books are eventually going to dominate this kind of mass market popular fiction.