Most people stop there.
But the scripture goes on to say that after Jesus says that statement about the stones, he then kneels down and grabs a stick and starts to write in the sand. Most commentaries that I have read say that what Jesus was doing was writing the sins of the people who were going to through the stones at the lady. I think that this is another example of how we should try to show compassion to more people because as we all know, we are not perfect and that all people have sinned. You don't need to buy Internet access to use free Internet e-mail.