There are some studies that compare a company’s Twitter profile to a blog.
The 2012 Edelman Trust Barometer study, which I’ve always found to be a fascinating read on where we are in social media practice, had some equally strong indicators as to where traditional and digital media sit on the trust scale.
For instance, trust in company’s web sites are (hold your breath!) up!
So this infographic, which summaries a survey by UK-based Text 100 is a good sidebar to the study. It speaks of engaging journalists using social media.