Ask HN: Bitcoin price and HN Bitcoin news correlation?

I remember seeing an article on HN a couple of years back correlating the future price of bitcoin and the number of articles mentioning Bitcoin in the top N posts. Sadly can't find it back.

I'm seeing a lot of more BTC news on HN recently. And BTC price seems it's about to pop.

Why is there suddenly so many BTC news on HN? What are your reasons for submitting/upvotting BTC articles news?