I am a huge fan of TrackMaven. Their competitive intelligence software for digital marketers is as good as it gets and they consistently produce some of the best data-based content marketing research available. They recently published a new eBook called The Content Marketing Paradox: Is More Content Really Better? It's a must-read for content marketers.
TrackMaven analyzed over 13.8 million pieces of content to answer the question, "Is more content better?" Their data confirms an intuition I've had for some time now. In the past few years, inbound marketers (like me) have preached the gospel that more content will get more traffic to your site. Companies across the world answered the clarion call and there has been a virtual flood of content unleashed.