Seth's Blog: Not rights, but smart stuff:
"1. Tell me clearly who you are, and why you are contacting me.
2. Tell me clearly what you are, or are not, going to do with the information I give you.
3. Don't pretend that you know me personally. You don't know me; you know some things about me.
4. Don't assume that we have a relationship.
5. Don't assume that I want to have a relationship with you."