The diffusion of online tools in education is increasing exponentially. Sener (2010) cites an increase in online course enrollment from 1.6 million in 2002 to 5.6 million in 2009. Moloney and Oakley (2010) predict a 20% annual increase over the next few years. years of the number of participants in online education. To meet the needs of a changing student population, educators must be aware of the myriad tools available to enhance learning. This article presents the use of wikis in education and evaluates wiki effectiveness according to Chickering and Gamson's seven principles of good practice (cited in Hoskins, 2010). Introduction to Wikis Wiki is a browser-based editing program that allows multiple users to contribute and edit text. It includes editing tools similar to a word processor that allow the user to control the size and color of text, make text bold or italic, and enter web links and images. Changes are tracked by the software and successive changes can be monitored or even rolled back to a previous version. The program provides email notification of user changes to their account settings (Cunningham, 2002; Crocker, Hutchings, Nussey, Park, & Springate, 2010). In education, wikis are useful in that they allow open editing. of a document. If a student notices an error, they can simply modify the text. Crocker et al. (2010) mention limited knowledge of wikis by graduate students, but emphasize that interaction on the wiki creates a dialogue between students that enhances their learning. Wiki activity is useful to educators because it promotes contact and cooperation among students, encourages active learning, and ensures rapid feedback from other users. The col...... middle of document ......higher education: exploring barriers to successful implementation. Interactive Learning Environments, 18(3), 219-231. Kardong-Edgren, S., Ha, Y., Hallmark, E., Hurd, D., Oermann, M., Snelson, C., & Tennant, M. (2009). Using a wiki in nursing education and research. Scholarship of the International Journal of Nursing Education 6(1), 1-10. doi: 10.2202/1548-923X.1787Kleine-Staarman, J. and Pifarre, M. (2011). Wiki-supported collaborative learning in primary education: How a dialogic space is created for thinking together. International Journal of Computer Supported Collaborative Learning, 6, 187-205.Moloney, J.F. and Oakley, B.,II. (2010). Developing online education: increasing access to higher education. Journal of Asynchronous Learning Networks, 14, 55-70. Sener, J. (2010). Why online education will reach full scale. Journal of Asynchronous Learning Networks, 14, 3-16.