"Every section on Craigslist is based on community feedback. People in law enforcement and related areas told us that they want us to isolate some of the, some kinds of ads in their own particular categories," he explained. "For example, we have erotic services, because that concentrates legitimate erotic services in one area, so people know what they are going to see when they get there. This has been reinforced very strongly recently by the law enforcement."
In a 2006 interview with "Nightline", Newmark also defended the erotic services section, saying, "People would find other ways to do it," he said. "It would spread to other, more legitimate sections of our site."
On May 3 Newmark will attend a benefit concert in Minnesota for a scholarship fund at St. Olaf College in memory of 24-year-old Katherine Olson, who responded to a Craigslist ad for a nanny, and was murdered by the man who had placed the ad.
Newmark says he'll always be committed to the community he formed and now serves.
"I'll do this until I die," Newmark told ABC News.