Originally Posted by nihil
Setting aside morals, ethics and possible local legislation I can see a clear case of criminality here.
I think that it is pretty much Worldwide that a material loss would have to be demonstrated for any case to be made. So in the case of an unlimited account, that would probably be impossible.
However, in the UK at least, there are numerous accounts that are limited or capped. You would really have no way of knowing what sort of account it was and if you start using limited resources that belong to someone else then that is a material and quantifyable loss and is plain theft, which is a criminal offence.
;)