great collection of responses to the question
White paper from Edelman
More effective and cheaper than direct mail or standard phone calls.
from Kevins Nalts
Twitter community fundraising
aggregating different feeds via Twitter esp. for disaster response
online video is the way to go for those with small budgets
Brian Humphrey of the LAFD's page of Web 2.0 how-to resources
Craig Lefebvre applies Mack Collier's brand evangelist framework to social marketing.
Online journal from GWU School of Public Health
Fun customizable images
Seth Godin's quick guide to creating an eBook
abstinence-only campaign has exactly same rate of sexual activity as abstinence-plus
Journal and related website
Examples of well-designed websites, both commercial and nonprofit
How nonprofits can use Flickr from Beth Kanter
Pete Blackshaw's guide to the different types of consumer generated media
Updated link: http://www.adweek.com/news/advertising-branding/scientist-influencer-theory-bogus-105981 Don't worry about finding the influential people when trying to bring about social change, but rather look for the easily influenced people.
Proceedings of an e-mail discussion sponsored by the National Institute for Literacy - Health and Literacy Discussion List
Divides approaches out by direct service, social marketing/education, business/consumerism, policy advocacy (i.e., government and corporate), and politics (i.e., via elections).
Great list of examples from Have Fun • Do Good
Questions to ask before jumping into using social media in your own program
Complexity science seeks to understand how complex adaptive systems work the patterns of relationships within them, how they are sustained, how they self-organize and how outcomes emerge.
Good examples of effective use of MySpace
The results of a clinical study into exergaming using Dance Dance Revolution indicate that regular use of the game "improves arterial function in overweight children".
Great tips for any individual or organization on how to build their brand
A great description of how to get started
What makes one health communication ad effective and another not? There are many variables that can make or break the success of the message.
Graphic warnings on cigarette packs working, study says
A great guide to distilling scientific information for public consumption from Cognitive Daily
They differ by age and the way they use the device
Stephan Dahl gives some examples of advergames used for social marketing
The pink bible of health communicators
The effect of health communication fear appeals on the body
Craig Lefebvre beat me to posting on this, and did a better job of it than I would have.