I see a few of them per day (e.g. "I bet you can't find a word starting and ending with T"). When a friend comments on them they show up in my feed. I imagine t

I see a few of them per day (e.g. "I bet you can't find a word starting and ending with T"). When a friend comments on them they show up in my feed. I imagine that a small percentage click through to the page to see what other content is there. Considering the low bar to create such trivial content, whatever traffic it generates is worth it.