Document Collaboration Using Wikis

Let me first start my post off with the definition of a wiki. A wiki "is a flexible website principally designed for document collaboration and content editing by all members involved in a project. Wikis use the collective knowledge and information input of all to create comprehensive documents." This being said, I hope some light is shed on why we have wikis and why when you google something, wikipedia is surely the first source to pop up.
Wikis were created basically with the soul purpose of collaborating documents over the internet into one, easy to read webpage. Seeing as how most projects call for some kind of document collaborating or collecting you can see the need for these wikis. For example if you search for something on Wikipedia, the page that comes up contains notes, external links, futher reading and other tools that help pull up more documents to aid in your project. This is the purpose of a wiki. More than one document collaborated into a single webpage containing a wealth of information.
Another aspect to look at is some cases the wiki can be updated by any of the members of that wiki, so you know the information is recent and updated. Say a member of the wiki finds something and needs to refresh some information or a document contained within the wiki, he/she can do it themselves without having to go to a leader. This helps out in the relevance of the webpages contained withint the wiki.
Wikis are one of the best tools to use document collaboration as well as project management. If one needs research done or wants to compile a collaboration of documents themselves, wikis are definitely the way to go.

Resources:
http://www.brighthub.com/office/project-management/articles/52061.aspx