This Conference paper by Martin Farley gives an outline of four wikis in the legal sector and examines why they were established, how they operate and how successful they have been at achieving their objectives. It also includes a brief introduction to wikis, a list of examples of other possible uses within the legal sector and a broad overview of advantages, disadvantages and probable future developments. It aims to provide an idea of what is practically possible at the moment and where the potential of law wikis lies.