I've posted about this before, but thought a gentle reminder might be worthwhile. NPR reminded me today.

Chances are you have some cookies hidden on your computer. Here's an article about them. http://www.wired.com/epicenter/2009/...s-think-again/

If you use Firefox, Safari or Chrome as your browser there is an add-on called Better Privacy that will remove any of these that you already have and stop new ones from being added. Google better privacy and it will show you the links to the various browser options.