How Do You Market Niche Sites With GMB?

 

In episode 322 of the weekly Hump Day Hangouts by Semantic Mastery, one viewer asked how to market niche sites with GMB.

The exact question was:

I have a shopping cart website that is the root domain, however I decided to diversify my website to create subdirectory blogs using WordPress to create different niches. I have 50 WordPress niche blogs in directories, ex. How do I market my niche sites with GMB?