The present study examines the use of clinical rhetoric and discourse within the professional online forum "Gambling Issues International." The aim of this research is two-fold: (a) to examine the discourse of clinicians and researchers in defining gambling pathology; and (b) to investigate how professionals perceive the potential problems of stigmatization for their clients. Both qualitative and quantitative methodologies are employed in analyzing the data. Computer-based content analysis of listserv members' records is used to examine professionals' discussion of client and societal responsibility for gambling addiction, the diagnostic categorization of individuals, and the consequences of stigmatization. Quantitative methodologies utilize an online survey that is distributed to listserv members. The survey assesses how the medical model influences the discourse of researchers and clinicians in the field of problem gambling. The results of this research will contribute to an improved understanding of how the medical model creates such discourse and its role as a factor contributing to the stigmatization of clients.