This paper presents results from using an asynchronous Web-based discussion forum coupled with an integrated student peer rating system as one component of an introductory Information Systems (IS) course with high enrollment (e.g. a class with over 100 students). There are two major issues with the typical introductory IS course: it covers too many topics, and it is difficult to engage students in active learning in a classroom environment due to large class sizes. To address these issues, an open source discussion forum was modified and used for topical discussion outside of the classroom. Students were allowed to participate in a discussion about topics of their choice and were encouraged to rate their peers' contribution in forum. Overall, students evaluated the online forum discussion positively and provided suggestions for improvement.