An underlying assumption of the Arrestee Drug Abuse Monitoring (ADAM) Program is that if a new drug emerges on the streets, it will take root in a criminal population before diffusing to members of the general population. The author explores recent ecstasy use with data collected from adult arrestees surveyed through the ADAM Program in 2000, with results suggesting that ecstasy use among adult arrestees is not a serious problem. Implications for drug surveillance are discussed.