San Francisco Chronicle: Yahoo back in X-rated business
AVN Online: Yahoo Back In Adult Ad Business: Report

When mainstream network TV is showing racy scenes and billboards look like Playboy centerfolds from 1980, how can Yahoo turn down all that revenue from the Adult sector? Apparently, it can't. Half of the top 100 most frequently searched keywords involve adult content. Not having ads is a bad user experience for these searchers, and all that's, well, revenue.