Continuing professional development as it is pursued through the interacting paradigms of reflective practice and action research can be facilitated through the disciplined use of non-judgemental discourse. A framework for such purposeful interaction, "cooperative development", has been established for face-to-face use among TESOL professionals for some time. It has now been extended into computer-mediated communication via the use of e-mails and instant-messenger. An example of each is analysed, highlighting the continuing importance of affective considerations in both the personal and pedagogic aspects of a teacher's continuing development.