The author works for a company marketing a "a scientifically driven way to quantify the match between a job candidate and an open position" and is making claims derogating another mechanism for matching candidates and position. He's not exactly an unbiased observer.<p>For the record, I've been involved in hiring here, and I've never asked candidate who he knows at Google, I've never heard of a candidate being asked such a question, I've never seen anything related to such questions on interview feedback, and so on. If Hardtke's account is true (and that's extremely doubtful), his experience bears no relation whatsoever to mine on the either side of the interview table.