Facebook really wants you to "Like" stuff. Heck, you can even like these PSAMP posts directly from the bottom of each story. And if you visit the main Facebook site, they'll even suggest other things that you should or shouldn't "Like," aka promote to your friends and followers. Most of 'em are nonsense, and are just silly things that people you know clicked on at some point or another.
This one is the best, though. Facebook wanted me to show my support of Primanti Bros, because the tie-in to my interests is that Primantis was a common selection among Mario Lemieux fans. I'm a Mario Lemieux fan, so it makes sense that I also love those awesome sandwiches. Facebook nailed this one.
I am exactly like every other Pittsburgher. Fitting in with the crowd rules.