User blog comment:Brandon Rhea/Making Ads Better: The Basics/@comment-954127-20170116202344/@comment-20644-20170117215723

"So there's definite interest in superheroes"

That part of my comment acknowledges the 3 superhero communities

"and those communities show a big interest in fantasy/heroics in general."

And that part of my comment acknowledges a wider fantasy/heroics (and, as I mentioned in my second comment, sci-fi) interest shown in most of the rest of the communities on the list. It's not meant to suggest that every single one of those communities is a superhero community, I'm simply showing that there's a variety of interests there beyond ones that are directly related/similar to Ghostbusters.