Self-Promotion - Does it sometimes go too far?

Mark Samuels has raised some interesting issues on his blog about the amount of self promotion that goes on these days amongst various writers.

Mark says: "I'm finding it increasingly difficult to drum up enthusiasm within myself for the horror/weird fiction genre right now. It's not the literature itself that depresses me, it's the insular self-obsessed promotional circus that surrounds it. I know there are good talented folk in there, but, by heaven, they're not the ones making the most...