Interesting, if valid

This thing from Microsoft claims to predict demographics based on search terms used and urls visited. It reckons for example that if you're reading this journal you're 51% likely to be male and 47% likely to be 24 or under, whereas for LiveJournal as a whole the figures are 54% and 49% respectively, and for venta* it's 50% and 45%. It also throws up different results for individual posts, althoug some return no result.

No clue as to where their base data comes from, maybe from evil monitoring within people's Internet Explorers?

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* (Picked purely at random as I happened to have her journal open at the time.)