Thanks Viper GTS for the link.
Academic product misuse. This form of license misuse occurs when a product that is manufactured, licensed, and specifically marked for distribution to educational institutions and students at reduced prices is diverted into normal commercial channels of distribution. Typically this product will contain a sticker indicating that it is an academic product and for use only by educational institutions.
So the question is: Is trading at these online forum a "normal commercial channel of distribution"?
If it is not a "normal" commercial channel", we could even let people sell it at these forum.
If it is considered "normal", should we ban "trading" these software as well?