My views on #telleveryone: lots of takeaways but I miss one answer

I have reviewed Alfred Hermida’s Tell Everyone: why we share and why it matters for Digital Journalism, and it's now online. In short, I find it to be an ”easy read with lots of takeaways” and insights on the sharing logic of social media, but it does not answer the question of why it matters for journalism.
     You can find my review here. If you don’t have access to Digital Journalism please let me know, and I will send you a link to one of my (limited numbers of) free author’s copies.