Ha! The little eye icon? It's counting individual page views. It doesn't even eliminate duplicates from the same user or the same session, it's just flat page views.
It increments on every single refresh.
What an absolutely useless metric. I can inflate your eyeball marker by mashing f5 a few hundred times.
Edit: I think it's actually "page views by someone that isn't you", so your own posts won't increment when you refresh, but other peoples' posts will. Goofy.
Edit #2: It doesn't increment on a profile page, only on the feed. If you sit and mash f5 on your friends feed, you'll watch the count increment. Trying to click on @sodium's page and reproduce it failed to do so. @webnesto - you mentioned wondering about this.