So says new research from the Pew Internet and American Life Project, which states that about one-fifth of U.S. adults have read an e-book in the past year.

And if you expand that to include Americans over 16 who have used an e-reader device or app to read news articles or magazine-style features, the figure jumps to 43%.

E-book users tend to read more often than people who read only print material, Pew found. In particular, they read more books. A typical e-book user read 24 books in the past year, compared with the 15 books reported by typical non-e-book users.

Also, a third of people who read e-content say they now spend more time reading than they did before e-books.