No, please don't. There's no support for it, so it would be very likely you get scammed.
Almost any other game I played disallows it, so there is probably a (legal?) reason for it.
In addition, once the account has been sold, a common tactic is to file a support ticket, claiming you got hacked, get the account back - and keep the money. That's probably why it's generally disallowed. ;P