Good post here about understanding psychological drivers around content engagement. The post is directed at marketers but could be aimed at training and learning and development professionals, especially those in elearning and social learning. Why? Because it's all content and understanding how people consume and engage content is key to getting engagement with learning tools and content.
Successful elearning engagement requires a good understanding of the convergence of neuroscience, human psychology and group dynamics as seen in Facebook, Amazon etc. Bring this into the learning environment and you will be on to a winner.