Wikis are collaborative websites that allow users to easily add, edit, and link web pages. Wikis get their name from the Hawaiian term "wiki wiki" meaning quick or super-fast. The largest wiki is Wikipedia, which has thousands of entries in over 200 languages. PBwiki allows users to easily create free wikis with features like unlimited pages, revisions, gadgets, videos, and file uploading. Wikis can be used in education to collaboratively publish student projects and allow visitors to contribute content.