is this a milestone?

As a parent, you treasure the milestones your children reach...their first step, their first word, the first day of school, their first crush, their first porn site??????/
Yes it is true, my 14yr old has stumbled upon cyber-porn! The problem is that he keeps on stumbling, even though he knows that we know! Is it some compulsion or just curiosity? When we were his age, you really had to work hard to even get your hands on a faded, wrinkled picture of a playboy centerfold. But now, a few key strokes and you are open to a world of amateur and professional movies from around the globe....for free. (No, I am not telling you the website) I know the curiosity is innocent, but the things that our children are finding are far from it! We put a parental block on the computer, and then he couldnt even get on his own "myspace" page. The only answer is constant supervision and letting them know that the images the are seeing are not real relationships and not real love. You need to interject morality, every chance you get to battle the onslought of the easy-access porn.
Be strong!!!!