What do you think Tesco get from the clubcard system? or any supermarket loyalty scheme for that reason?

they give you points and in return they get to monitor what you buy and how often so in future they know what products to reduce or fix the price of to maximise sales, its nothing new. How long before health/life insurance has access to this information and can see how healthy you eat/drink and therefore refuse you cover or treatment?

Big brother has been with us a while we\\\'re just too apathetic to do anything about it.