Some clever fellow has put together a little script which checks your browser history against a list of major websites' readership gender ratios and then estimates the likelihood that you are male or female. I am, it seems, fairly male, though with a bit of a feminine side:
Likelihood of you being FEMALE is 19%
Likelihood of you being MALE is 81%
Site Male-Female Ratio
(It's rather slow running it in IE.) It probably says a lot about family economic profiles that the most female site I've visited is our utility company.
And while we're on the subject of gender and the internet, you've doubtless seen this cartoon before:
MrsDarwin says she's the voice from outside the panel. And indeed, sticking my finger in the dike of sanity to try to hold back the rising tide is one of my ever present vices.