I need to get with the system administrator. There is software that traces the origin of a message back to the ISP. Basically, it traces back to the last network router's IP address. Then, by request the ISP can trace the message back to the user. Simply put, soon you will have the identity of the Steve-Jones-Wannabe-Criticiser. Then, you can prosecute as you wish. There are stiff fines that can differ people from such behavior.