A number of people have pointed out to me that it is actually possible to not select your gender on Facebook (something I was unaware of I must admit). So, I re-ran the numbers and checked specifically for ‘male’ and ‘female’ (not just the difference between male and the total, which I’d wrongly assumed were female!).
The stats are in the picture below. Click to enlarge it. Still a great percentage of females, but a lot of unspecified genders. I wonder if these represent inactive or unused profiles? I mean, if you were a regular user, with Facebook friends, there’s a pretty good chance you’d specify your gender. Anyway, here’s the upate: