The purpose of this study was to examine the potential of asynchronous discussion forums (ADFs) as a medium to facilitate reflective thinking among preservice teachers. Of particular interest was the extent and manner in which this potential varies with respect to (a) the structure of the ADF, (b) the focus of the ADF, and (c) group dynamics. Quantitative and qualitative research methods revealed findings that support the potential of this medium as a means to facilitate reflective thinking. Importantly, however, the findings presented here bring to light several additional important considerations for both practice (e.g., strategic student placement within groups to facilitate higher levels of learning) and research (e.g., relationships between social dialogue, group membership, and demonstrated levels of learning) involving the use of asynchronous discussion forums.