This is a valid point. Your blog should ideally be related to the business you are launching. Luckily, this frequently happens just because people's interests

This is a valid point. Your blog should ideally be related to the business you are launching. Luckily, this frequently happens just because people's interests tend to line up that way. But even if they don't, you'll get some interest from people just because they know who you are and are interested in what you're doing. And they may know know someone who would be interested in it...etc. So the permission asset is a pretty flexible tool, but obviously most valuable when it's on topic.