Encyclopedia business ruined by Web, Encarta is the best selling software reference

And while the encyclopedia industry’s overall revenue in the United States is growing, sales in 2003 only totaled about $300 million compared to the high of $800 million in 1989. Among CD or DVD versions, Microsoft’s $70 Encarta is the best seller but industrywide sales for encyclopedia software fell 7.3 percent in 2003 from 2002, according to market researcher The NPD Group.