Wikipedia, Champion of User-Generated Content
http://www.ibm.com/developerworks/web/library/wa-realweb4/index.html?S_TACT=105AGX08&S_CMP=EDU

Ogbuji, Uche
IBM
2007

Abstract:

Encourage user contribution to your Web site by learning from Wikipedia. Wikipedia builds on open source and respects the geographical variety and potential accessibility needs of its users. It provides tools to help users contribute, but also fosters an atmosphere where contributions are verified and discussed by the broader community.