Haha in rsc I never even seen that one until the end of rsc, don't know if your talking about rs2...
You used to change your password on the client, so we would tell people change their pass to runefox, stand by this pole, and log out and in and have 1M in your inventory, and I would always have my friend do it and he show 1M. What is funny is we always had a client up typed in their account info with runefox as password and when he logs we tried logging in, if it didn't work when he logged back in he said he didn't get the gp. We said did you change your password if not it won't work. :P
^^ More on that we would tell people we would leave and let them do it by their self and we would have them on our friends list and once we seen them log out we got them. I scammed so much from that. :P