I saw an interesting article on the Guardian at the weekend by James Ball. It offered advice on how to see what information is held online about you. I particularly liked the Google Ad Preferences link which shows how Google personalises the display ads you receive based upon your browsing history. In particular, it is quite good fun to see how old Google thinks you are and your gender based upon just your browsing history. Unsurprisingly, I was put in an older age category than I actually am………but I think my wife would back this up. Old before my time!
Anyway, why not just Google Ad preferences and see how right or wrong the search giant is about you. It is quite interesting.