According to a “25-year-old marketing & PR professional” writing in Darwin. I don’t agree. But Graeme Thickins makes some good points: Businesses don’t like gossip, they’re not passionate, they’re already time-strapped, they can’t write in blog style, etc. Maybe, maybe not. If Bob Lutz can blog for GM, still #3 in this year’s just-released Fortune 500 list, then who knows what’s possible. And no, Bob isn’t baring his soul or spilling GM secrets but he does a creditable job in his FastLane blog. Both “comments” and “trackbacks” are enabled per proper blogging etiquette. And he’s started to develop a recognizable voice, which is key to good blogging.