Sometimes this happens because of algorithms attached to articles you've read in the past.

For instance, I once clicked on some silly article about which food you would be, based on your zodiac sign. I had never clicked on astrological-type articles before and am not interested in it. It was just a lark to click on that article.

But now I get three or four of these type articles in my feed every day. I never read them, but they keep showing up in my feed.

So it's not necessarily that there are more of these articles or that these things are happening more frequently. It's just an algorithm that tracks what you've read before and gives you more of them in your feed because they think you want to read that.