I posted that link at the same time as someone else, with a post date like 5 minutes after them. I also didn't clear off the referral parameters (I got the original article in an email blast about tech news, with two utm_ parameters). So maybe it looked like a referral link or a possible duplicate of someone else's. shrug
Either way, that article really made me re-consider the 'Senior' in front of my title. Very well written.