effective as of may 11 , 2009 ( the `` effective date '' ) , world of warcraft will be hosted in the european union by blizzard entertainment s.a.s. ( referred to herein as , `` blizzard entertainment '' ) , and/or its licensors , and all use of the world of warcraft proprietary on-line service ( the `` service '' ) is governed by the terms and conditions contained in this terms of use agreement entered into between blizzard entertainment , and yourself , and includes any future revisions implemented according to the procedure described in article xii herein ( hereafter referred to as the `` terms of use '' ) . 
