When I go to a blog like, say, A Chair, A Fireplace & A Tea Cozy, and I read a post about, maybe, Buffy, and I see that that post received 3 comments, I actually read the comments. What's more, if an individual making a comment is someone I don't know, I may very well follow his hyperlink.
That's how I came to stumble upon a post called Confessions of a Reformed Commercial Fiction Slut at a blog called Confessions of an MFA Seeking Writer. That post included a hyperlink to a blog maintained by one Nathan Bransford, Literary Agent and his post What Makes Literary Fiction Literary?
Both these guys said pretty much what I've always heard--commercial/popular fiction=plot; literary fiction=character. But they went into more depth and sophistication. And Bransford, in particular, was respectful of both types of fiction. The stereotype you usually hear about is literary people looking down their noses at commercial people and commercial people getting all defensive because they feel looked down upon.
What really was astonishing about this whole thing--creepy even--is that I was talking/wondering/ruminating about this very topic just two days ago.
Now I must go back and read posts I've found at Bransford's site on whether or not editors edit. That's another subject I've been known to ponder.