What is a Wiki?A wiki is a type of Web site that can be written and edited by its visitors. Wikis grow and thrive mainly through user contributions, so they encourage accessibility, participation, and collaboration. Users and contributors can add text, links, and many forms of media and may edit or remove prior information. Wikis usually have a special feature that creates a record of all changes, so changes made erroneously or improperly could be easily removed. Most wikis are easy to use, requiring little technical skill.