Research from the rational choice perspective found that some offenders adapt to law enforcement strategies using various tactics to decrease the risk of detection. Few have considered the effect that this has for criminals who engage in high and low visibility offending, as well as the ways in which arrest avoidance practices are communicated between and among offenders. In this qualitative study, the authors explore these issues using a sample of posts from Web forums for the customers of prostitutes in 10 cities in the United States. This analysis finds that johns openly discussed, shared, and used a variety of methods to decrease the risk of arrest as well as informal threats, such as assault or theft. Implications for law enforcement and rational choice theory are also discussed.