This study reports the findings of an investigation of the factors influencing the use and usefulness of wikis in an introductory, undergraduate information systems course. Informed by the media choice, technology acceptance model from information systems research, and group collaborative learning research from the education literature, a survey instrument was developed and administered across the entire course. The study found that wiki use was influenced by the student's prior expertise with wikis, with their perceived usefulness of wikis being strongly influenced by their teachers' attitudes towards the technology, and the ease of access to the wikis. The students' overall attitude towards wikis was largely influenced by the extent to which they saw wikis as helping with their assignment work, and their intention to use wikis in the future was driven by their perception of wiki's usefulness. The paper concludes with an outline of the lessons learned from the study and recommendations for instructors who are thinking of using wikis in their teaching. (Contains 5 tables.)