One of several top ten lists from the wise folks at Green Media Toolshed. From the intro:

Many communication efforts fail because they target everyone. In reality, most outreach should target a specific group of people. Make sure you can define the allies you need so that you can focus message, resources and strategy where it counts.

1. Name your "Wish List" If you could convince 130 people to embrace your message today who would they be? Why? What can they do for you? What do they think about your issue now? What are the key things they need to believe to help you? Focus on influencing this target audience. 

And there's more...