The U.S. online newspaper audience has grown from 38.97 million in December 2004 to 63.05 million in December 2007, an increase of more than 60 percent over three years, according to the MegaPanel Data from Nielsen Online.

Active reach for online newspapers has also risen, from 26 percent in December 2004 to over 38 percent in December 2007.

Total Web pages viewed doubled from 1.4 billion pages to 2.9 billion pages. Pages per person were up from an average of 36.3 pages to 45.8 pages, according to Nielsen Online.

On average, U.S. users spent 34.5 minutes on online newspapers in December 2004. In December 2007, it grew to nearly 42 minutes.