There's one thing I don't see anybody talking about here. I don't think it's very practical to ban selling accounts. How could you practically apply a ban like that? I mean, you can see if the quality of posts completely changes at one point of time and the person starts spamming. If they already have the status they want, they may not really post very much at all anymore. I think it's also a good point, that if it would be banned, it could drive prices up more, like illegal drugs. You have to keep in mind, the original account owners put in a lot of work and effort to get their rank up. If they decide they want to move on in their life, maybe their efforts should be worth something. Then if the new account owner does stupid things, they'll just lose their whole investment. They'll get what they deserve.