Asynchronous online discussion has been widely used by faculty members and students in schools and universities. Previous research has examined how factors such as the discussion activity, knowledge about the discussion topic, and the behaviour of other participants can affect learner participation. This study explored student facilitators' influence in promoting learners' participation in terms of their exhibited habits of mind. The following habits of mind of the facilitators were examined: (a) awareness of own thinking, (b) accurate and seeks accuracy, (c) open minded, (d) taking a position when the situation warrants it, and (e) sensitive to other. A two-cases study methodology approach was used in this study. The habits of "awareness of own thinking" and "open minded" were found to be exhibited more often by the student facilitators in the two cases. When we zoomed into the top 30% of the forums in terms of learners' participation, we also found that the frequency of habits of mind, "awareness of own thinking" and "open minded", were exhibited more often by the facilitators. (Contains 3 tables.)