The official Guild Wars website is now featuring an article discussing the games Real Money Trade (RMT) policy. This article explains the reasoning behind the illegality of Real Money Trade in Guild Wars and how they go about combating the widespread problem.
There is also a shady side to real-money trading that players may not realize exists, but which has a serious impact on many players. Real-money trading companies hack into and steal legitimate accounts, often by distributing keystroke-logging malware to steal passwords. In fact, simply purchasing gold from these companies may open you up to a later hacking attempt. These hacked accounts are then stripped clean of any valuable in-game items and/or used for botting.
The full story is available here.