Wikis are collaboratively produced websites that allow instructors to turn the dynamics of traditional assignments upside-down. They provide a motivating medium in which students engage in an extended writing process. While many traditional assignments are written by a single author, finished, and then forgotten, wiki assignments can be read, written, and re-written multiple times by anyone in the class at any time. As a result, the distinctions between author, audience, and evaluator are blurred, allowing students and teachers to approach their work in entirely new ways. Short-term, limited focus homework assignments become highly extensible teaching tools. Authorship and ownership of a text, once limited to a single student, can now belong to the class as a whole. And most importantly, the writing assignment, once a lonely endeavor, becomes a collaborative social activity, much more capable of developing the student's overall communicative competence.