Matt Knox, a talented Ruby instructor and coder, talks about his early days designing and writing adware for Direct Revenue. (Direct Revenue was sued by Eliot Spitzer in 2006 for allegedly surreptitiously installing adware on millions of computers.) S: You wrote adware. You bastard. M: [sheepishly] Yes, I did. I got to write half of it in Scheme, which probably means that I deployed more Scheme r