Cognitive surplus, a book by Clay Shirky exposes how humans are using their free time to express their generosity and creativity through community projects from writing Wikipedia articles to posting lolcats. A very interesting read if you are curious about how technology now enables us to tap into the networked intelligence and social media to initiate crowdsourcing projects. Visit Ifelse therapy, a social company that makes use of creative and new media coupled with social networks to bring about positive change in society.