What Is a Plus Content?

Archie says he's run an email list for 10 years, and has had a whole lo down oose of people sign up to it. He thinks the new 'a plus content' section on amazon is good until they get more data about whether or not it helps authors sell their books. But some authors are just going in there and throwing something in that may look unprofessional - which could hurt sales. Archie: "I think it can't hurt if you have a great graphic designer"