I don't know if they do this on purpose, or whether it's just an oversight. If it's on purpose, I'd love to know the reason why.
So here's a story; and I hover over the text:
There you go, it lights up and I can click on it… Oops! I moved my mouse by just a few pixels, and:
Ew, I missed! I can't click on it any more.
Fitts' law, my friends, is being violated. Why are they making it harder for me to click on their headlines?
Ars Technica doesn't seem to have this problem. No matter where I hover inside a headline, it still lights up as a link, and I can click to view it:
I find this somewhat upsetting.