EULA

End User License Agreement (EULA):
a license used for most software, including MMORPG’s. An EULA is a legal contract between the manufacturer and/or the author and the end user of an application. The EULA details how the software can and cannot be used and any restrictions that the manufacturer imposes (e.g., most EULA’s of proprietary software prohibit the user from sharing the software with anyone else). World of Warcrafts EULA states: “Note that Blizzard Entertainment either owns, or has exclusively licensed, all of the content which appears in World of Warcraft. Therefore, no one has the right to "sell" Blizzard Entertainment's content, except Blizzard Entertainment! So Blizzard Entertainment does not recognize any property claims outside of World of Warcraft or the purported sale, gift or trade in the "real world" of anything related to World of Warcraft. Accordingly, you may not sell items for "real" money or exchange items outside of World of Warcraft.”