I’m a male between the ages of 35-49 based on my name. http://blog.siliconholler.com/ is gender neutral and under 18.
Michael Silence is a female under the age of 18–nice pseudonym for a female writer! KristyK is under 18 and split exactly between male and female. Big Orange Michael is a teenage male. And Barry is a female between 25 and 34. Wow! Did I ever have the wrong impression about you guys! Btw, Google happens to be absolutely written by a woman age 25-34.
I don’t have a lot of confidence in Microsoft’s Demographic Predictor.