AbstractThis paper reports the findings of a pilot study that focused on the usability of Web-4M, an online collaboration tool. The purpose of this study was to (1) investigate the effects of anonymity in the collaborative process, as well as (2) examine the overall effectiveness of the collaboration tool. Two groups of preservice teachers were used for this study. One group was comprised of people who collaborated without knowledge of other contributors' identity (the Anonymous Group); the second group was comprised of people were knew the contributors to the collaborative activity (the Known Group). This study has implications for distance learning, group discussion, and similar applications of remote collaboration.