From: HeyBub on
Bear Bottoms wrote:
> Why internet �privacy� concerns are wrong
> by Tom Clarke
> Picture the scene: you go to your local supermarket and buy ten
> items. As the items are scanned by the shop assistant, each one is
> logged in a computer database. When you complete your purchase and
> leave the store, a record of what you bought remains. Although, it�s
> not actually a record of what you bought at all. It�s a record of
> what somebody bought.

[...]

Here's an example of this in practice. A few years ago, after a hurricane
hit Florida, Walmart queried its computers for what their affected stores
ran out of. Not the biggest sellers, what items were deplinished entirely.

Beer and strawberry PopTarts.

The week before the next hurricane, uncountably many 18-wheelers loaded with
these two items began rolling from distribution centers as far away as
Michigan.

Florida was saved! Thanks to computer statistics.