Lewis Dvorkin writes that's contributor system, in which people with expertise in particular fields blog for (and some get paid), is a "disruptive model," with 850 contributors who have helped increase traffic by 50 percent to 25 million unique monthly visitors. Ken Rapoza says in a testimonial: "It keeps me in journalism working for a major, well-read brand. I average over 240,000 visitors a month. I probably have more people reading me here than I did at Dow Jones and the Journal. ... It allows me to make okay money working part time." pays certain contributors a fee every month, with bonuses for making visitor targets, and requires that contributors write a certain number of posts each month and interact with the audience in comments.