The commenter asserting that knowing a user's gender is not useful for marketing is wildly wrong. I agree that showing pink to a user you think is female or onl

The commenter asserting that knowing a user's gender is not useful for marketing is wildly wrong. I agree that showing pink to a user you think is female or only showing trucks to males is laughably stupid, but we have had campaigns that were not designed to target a specific gender that had a significantly higher conversion rate from one gender. It would have been a huge waste of money to not change the targeting criteria for the ads. Even an imperfect algorithm could save lots of money there if it's more than 50% accurate. That said, trying to guess gender based solely on name without any other context does seem woefully unlikely to do well.