The purpose of this study was to determine if the nature of student comments on anonymous end-of-course evaluations differed relative to course delivery medium. Comments evaluated were submitted by 202 graduate students enrolled in face-to-face (F2F) and online versions of research and statistics courses over a four-year period. Results suggested that students enrolled in F2F courses offered more constructive comments than their online counterparts, while online students offered more praise and destructive comments. Furthermore, online students utilized more harshly emotive language in expressing opinions than did students in the F2F classes. Findings support the notion that course delivery medium affects student communicative behavior on anonymous course evaluations and suggest that online environments might benefit from more instructor attentiveness towards group/community building. (Contains 1 table.)