This year marks the 15th anniversary of Public Access to the World Wide Web.
30th April 1993 - CERN Announces that the World Wide Web can be used by anyone for free!
Tim BernersLee and Robert Cailliau manage to persuade Cern to provide the web technology and program code for free so that anyone can use and improve it. The decision is credited as one of the key reasons the web grew so quickly.
Reference : http://today.ninemsn.com.au/article.aspx?id=454773