Now I've quiet minute to myself, I've had a chance to have a "proper" read and I think you're spot on. As a post for "outside" Hive consumption you make a very good case for people who need to increase both income and look for more lucrative value streams. And the kicker - you get instant feedback from fans you can engage with. What's not to love?
Oh, and I concur with @chekohler. In fact, as I recall, I may have suggested something similar...
I think your "guides" series is a fantastic idea and I wish you everything of the best with them.
RE: Havey's Guide to Hive - Why Musicans & Music Fans Should Consider Using Hive