Abuse is a simple program that helps people fight spam. It will "read" any e-mail header you indicate, go on-line and check the various NICs, open relay DBs... prepare/send an email (lart) to the spammer's ISP in order for your voice to be heard.
I used this awesome little tool for a few years reporting spammers, virus senders, crooks and creeps and IT WORKS. I received confirmation from a few of the ISP's that the IP associated was terminated. A great little tool to compliment Abuse is called IPNetInfo. It's free.
Nice, thank you