Anyway, since it only looks at the latest page of one's blog in making its decisions, I should be able to sway it at least by a few percentage points, simply by including some vocabulary and phrases that seem more likely to appear in 'female' posts.
So, for the sake of testing the system, I'm dropping in the following:
My husband was in Miss Selfridge the other day, trying on make-up, when in came Victoria Beckham wearing a gorgeous ruched skirt. He's such a fangirl for David (squee!) that he didn't even notice. You know what men are like! If only I hadn't been at home with cramps, some knitting and the latest Stephanie Meyer I'd have been able ask for her autograph.
ETA: Interesting - it wasn't swayed at all. Those strong indicators of maleness, whatever they are, seem to have overwhelmed everything else, and 99% likely to be a man I remain. Hmm.