Good ideas... But... I'm imagining that would take a heck of a lot work... Saying that if you are blogging in an industry like SEO where personalities count - that would probably work nicely. Appeal to the EGO.
More often we are dealing with complex decision making units - where there is a hidden owner, a site technician tucked away or a marketing manager behind closed doors who calls the shots.
A single bullet email being the only entry.