These are accts of real players that left server mostly and gave up their log in info - i think thats allowed - not sure
Selling of an account is not allowed, but having someone temporarily run the account, like when you go on vacation is, since that person still owns the account. The real question is at what time the 'temporary' becomes 'permanent' even if there is no money exchanged.
The opinions expressed on this post are my own as a player, not as a Moderator.