I have to admit to just how much I HATE JUNK MAIL!
So, I've made this small document to house any material I find that will help get rid of it.
I use the program "WhoIs ULTRA" from AnalogX.com to find information about an address.
WhoIs ULTRA
After looking up an address, alternate-click it's name in the window and choose "Open detailed info". You may end up with an E-mail address, a Work address, or even a Home address to send stuff to. I just send the message shown at www.mindworkshop.com.