Who are My Readers? Can I Really Know

Graphic is a link to a Forbes article, same topic

I was just reading an article, yes, on Huffington Post Matthew Hutson: The Like Trail: What You Like on Facebook Says More Than You Know.  The article goes beyond the obvious of saying if you “like” something, then the conclusion is that is what you like.
It discusses a study project that goes deeper into what your “likes” say about you.  Apparently, the project personnel even tested their own accuracy at looking at likes and determining, say, whether someone was male or female, “black” or “white”, single or married and so on.
It turns out that if you live in Nevada or follow Nevada politics and policy, you would probably have already facebook-liked Sarah Palin, Glenn Beck, and Gene Wilder, of all people.  (The links are to their respective Facebook pages).  You would have wanted to follow a few other pages your writer Ava has never even heard of:

• Being Confused After Waking Up From Naps  (Sorry, I don’t get this one)
• I come from a town where a traffic jam is 4 cars behind a tractor (Okay.  I get it.  Rural.)
• I Just Realized Immature Spells I'm Mature (A really juvenile site.  I mean, that’s so obvious people).

Finally, who knew?  You would much prefer Milkshakes over Austin, Texas.
Do you know of any non-directly-related indications that would show someone who enjoyed reading this site versus someone who did not?  Care to share any of your favorite Facebook likes below?