As you buy and read eBooks, your eBook device collects data on your reading habits. Do you tend to buy lots of books and only finish a small percentage? Do you stick with a single author? Do you binge-read?

This family of data is useful to publishers and authors, but it sits in the virtual hands of the eReader software. Over time, the eBook companies will figure out a way to monetize that data, either by selling/renting the data itself, or by using the data to enrich the experience of their devices and to make it easier for their customers to spend more money.

Interesting article. I suspect this is just the tip of the iceberg.