Good point, well made, mate.
But shouldn't the ISPs be made to do more to combat the continual stream of cr@p which they allow through to their customers?
What I'd really like to see is one of these spam-perpetrators exposed, charged and jailed. And then let him describe the joys of viagra, willy-enlargment and the rest of his rubbish to his fellow inmates whilst carefully ensuring that he doesn't drop the soap in the shower....