A comparative case study involving two bestselling authors… First, Jon Krakauer, with video:
After the interview, a man who introduced himself as Thomas Dove took the mic and began giving his background. Krakauer requested the man ask his question.
The man persisted in a lengthy presentation about documents the author had acquired, and the audience booed him. Eventually, Krakauer took away the man’s microphone, and the audience was invited to leave.
To Mr. Dove’s credit, he publicly identified himself by name and profession, and chose to address his criticisms of Mr. Krakauer to him in person, rather than hide behind the veil of online anonymity. But that still didn’t give him the right to hijack the event or to treat it like his own personal deposition of Krakauer.
On the other hand, we have J.K. Rowling (some NSFW language here)
Shot (screenshot via Huffington Post):
Chaser:
Game, set and match for Rowling.
Icepicks and Nukes 
Have you ever considered about adding a little
bit more than just your articles? I mean, what
you say is fundamental and all. Nevertheless think of if you added some great graphics or video clips to give your
posts more, “pop”! Your content is excellent but with images and video clips, this website could undeniably be one of
the very best in its field. Wonderful blog!