The Gender Genie also believes that:

• Mike is male (overwhelmingly so)
• Mary is female
• Laurie is female (grrr - I hate teendiary.com, but I still go because I love Laurie)
• Brian is male (high margin of certainty again)
• Bem is male
• Jeremy is male (quite certain here, as well)
• Jon is male (no question)
• Andy is male

That's a 0% margin of error. Very interesting.

I wanted to read about the algorithm, but the link to it off of the Genie page is broken. There is a working link to an interesting little nature.com article, though. And it quotes a few source articles. I'll have to go pick them up and read up more on the subject.