Well a few things come to mind immediately.
You can also turn off specific badges from your top fans by clicking on a comment by a Top Fan and select Remove badge option.
At least I hope so, I mean, that'd be kinda awesome, not gonna lie I'am with the same view that facebook is displaying all the people who are visiting user's profile in the 'you may know' functionality.
This is an alternative to unfriending them, and they will not be notified if you unfollow them.
It is a one-sided relationship, after all.
Similarweb and Similarsites is a great tool to get information about the audience on a particular site.