I've been wondering, since lately, I see about half of the articles on the front page I don't read or if I read, didn't upvote--which leads to me wondering how

I've been wondering, since lately, I see about half of the articles on the front page I don't read or if I read, didn't upvote--which leads to me wondering how it made it on the front page. I wondered if it was a difference in taste, or people just upvote based on title. It seems like people are judicious with their votes.