I'll throw in a hypothesis: the change in content may have included a change in tagging, either by Playboy, or by third parties, related to the presence of nudi

I'll throw in a hypothesis: the change in content may have included a change in tagging, either by Playboy, or by third parties, related to the presence of nudity or other adult content. By changing the rating of the site, Playboy could have easily climbed out of the kid-safe or work-safe or whatever-safe content filter hole it was once in.