I received another copy of this today - and once again I was luckily using Linux when I discovered it.
It would seem like the circulators of this particular virus are really counting on the cluelessness of some of its recipients to spread it. But considering that we haven't really heard much about Mimail (yet, anyway) maybe the average Internet user is becoming smarter than the Mimail writers count on them to be. Or maybe it was just a stupid choice on their part to try to spread it using a PayPal ploy - something a person who doesn't have an account with PayPal is not very likely to fall for...
But whatever the reason, it's nice to see the spreading of this particular virus *might* turn out not to be as bad as originally feared.