Newbies, build your account yourself than buying what that might not be real, do not put yourself at risk, buying bitcointalk account is dangerous because you will still post like newbies
Truth to be told, many high ranking members do post like newbies so no one would probably notice the difference :p
Joke aside, both account buyers and sellers are already being tagged so sake is already discouraged. If you ban it all together here, they will just do it elsewhere, as they are doing it already, sales we see on the forum are probably just the fraction of what is really going on. There is simply no easy solution for this, as long there is demand for high ranking accounts (and there is) there will be supply.