The Nettle Annual 2006

I believe we’ll see a gradual change in the focus of products moving
from e-books to software.
E-books will continue to be produced and be popular, but will be
quickly overtaken by software as the marketers preferred choice of
product.
Resell rights will increase in popularity and will increasingly be used
for list-building as well as for creating additional streams of income.
If you have yet to learn how to setup and use resell rights, be sure to
do this soon.