One of the strategic intents of the 2011-2014 eXtension Strategic Roadmap is to reach more customers. Social media makes Cooperative Extension more visible. It invites learner collaboration via reactions, comments, reviews and rankings.
Sixteen communities of practice and the Military Families Learning Network have Twitter accounts. Check out the Twitter screen names and tips for using Twitter hash tags at http://create.extension.org/node/79034. Start following these excellent content providers!