There's a lot of users are abusing merit points, if you can't notice some of them are continues doing this. But the list given in this thread are only suspected so it means that most that the evidence given are not yet proven. I was sad because some of users are continues in buying merit or they can exchange with the others. I advise to them stop doing that because karma was always on the back. Maybe you improve your post, give the best quality you can and be creative and informative your post to easily earn merit points.