A really insightful and engaging presentation by Michael Goldstein, Digital Strategist at MRY NYC. He pin points the unfortunate and recent shift in focus for brands and the way they utilise social media platforms. He suggests an alternate strategy, one that encourages brands to focus on relevant and valuable content for the most important type of audience; a receptive one.
http://www.slideshare.net/michaelgoldstein/0retweets-things-i-hate-about-digital-advertising