Question: What is an aggravated netizen to do?

I have three answers to this question which cover a spectrum of responses ranging from polite to downright wicked.

The "I'm Nice" Method This document gives you hints on how to find out the real email address of the person sending out the spam or failing that, their system administrator.

The "I'm Annoyed" Method This document shows you how to make yourself really annoying to the system administrators at the offending site in order to get their attention.

The "I'm Really Pissed Off" Method While I don't advocate these things, this document gives a brief introduction to Net.terrorism and contains links to where the aspiring hacker can get themselves into trouble.