Don't you find that obstructive? Halfway through the article I am reading (still deciding if its good or not) and I scroll down to read more then a faded dark background popup comes up asking me for my email when I'm not even finished reading. Putting a subscription box at the bottom of the page after the article is fine, but distracting a user when reading an article halfway is rude and counter productive.
That's STILL not the exit intent popup. That only happens when you stop reading and go to leave.
I personally don't like the forced left column reading of this site. I'd rather read on the right. I don't like that the email subscribe box follows me down, it makes me dizzy.