Ward Cunningham used the word wiki (the Hawaiian word meaning quick) to name the collaborative tool he developed for use on the internet in 1994. Wikis are fully editable websites. Users can visit, read, re-organize and update the structure and content (text and pictures) of a wiki as they see fit. This functionality is called open editing (Leuf & Cunningham, 2001). All a user needs to edit and read a wiki, is a web browser. Consequently, the wiki has great potential for use as a collaborative virtual learning environment. Wikis abound on the internet. A well known wiki is Wikipedia an online collaborative encyclopaedia, where anybody can read, edit, re-organize and update the encyclopaedia content (Wikipedia, 2004).