Really good summary for people looking to increase their use of social media and a reminder of its power. Don't write off traditional media yet though, it all needs to be a part of an integrated strategy.
Today's public relations is about reaching select influencers in appropriate ways. An influencer, for instance a blogger who covers your niche, can be as valuable to your business as a leading newspaper, because he or she has the trust of your target group. It's all about audience--yours and theirs. These five tips will help you execute effective digital PR strategies.
http://www.inc.com/thehartford/five-tips-for-powerful-pr-in-the-digital-age.html