Selling merit isn't allowed (wasn't created for that purpose) so anyone that proposes to sell some will be red-tagged by DT members. It should limit possibilities as new accounts don't have merit to sell, and older ones wouldn't risk to red-flag their account.
Only remains the hacked or sold accounts...
Yes it has to be banned in this industry but there are still some people who are using this kind of process most especially to gain money and also to gain merits. They are just doing this because of greediness of the ranks, and for me it has to be stopped.