Yeah, I uploaded my high school graduation photo and it guessed 27. Guess it weighs facial hair a bit too heavily.

I'm thinking that wasn't the issue with the photo of my girlfriend, taken in natural light, that estimated her age to be 20 years more than it is...

I have a big ol' beard and it guessed my age (32) to within one year. It thought my wife and sister were 10-15 years older than they really are, and it thinks all my kids are girls.

I'm 32, and it guessed that I'm 43. It's probably because I have very thin hair on top, and the hair I do have is mostly gray.

Yep. With my beard, I'm 50 (too high by 12). Without my beard, I'm 35 (too low by 3).