World of Warcraft private servers
Official Text Print:
http://www.wow-europe.com/en/legal/eula.html
5. End user agreements
B. You agree that under no circumstances,
host, provide or develop matchmaking services for the Game or intercept, emulate or redirect the communication protocols used by Blizzard Entertainment in any way, including, without limitation, through protocol emulation, tunneling, packet sniffing, modifying or adding components to the Game, use of a utility program or any other techniques now known or hereafter developed, for any purpose, including, but not limited to, unauthorized network play over the Internet, network play utilizing commercial or non-commercial gaming networks or as part of content aggregation networks; or
(iv) create or maintain, under any circumstance, any unauthorized connections to the Game or the Service. All connections to the Game and/or the Service, whether created by the Game Client or by other tools and utilities, may only be made through methods and means expressly approved by Blizzard Entertainment. Under no circumstances may you connect, or create tools that allow you or others to connect, to the Game's proprietary interface or interfaces other than those expressly provided by Blizzard Entertainment for public use.
Terms of use :
http://www.wow-europe.com/en/legal/termsofuse.html
2. Only Blizzard Entertainment or its licensees have the right to host World of Warcraft! Accordingly, you may not host, provide matchmaking services for, or intercept, emulate or redirect the communication protocols used by Blizzard Entertainment as part of World of Warcraft, regardless of the method used to do so. Such prohibited methods may include, but are not limited to, protocol emulation, reverse engineering, modifying World of Warcraft, adding components to World of Warcraft, or using a utility program to host World of Warcraft.
WoW private servers are illegal. As a result, requesting for assistance from these private WoW servers are not allowed.