1st pic: 53% male, 23 years old. I'm a lot younger than that, but whatever.
2nd pic: 69% male, 23 years old. Yay, higher score.
3rd pic: 93% male. YES. But it guessed 12 years old, so dammit.
4th pic: 73% female, 15 years old.
FFFFFUUUUUUUU . . .
But none of those first four were very accurate pictures; my face was always at an angle. I got 84% female, age 24 from a pic with my entire face facing the camera directly. And then I took a similar photo and got 64% male, age 20. I can't say I trust this thing.