As soon as you unsuspectingly log into your favourite website, the broker will get a ping to alert them to the fact that you’re there. Virtually instantaneously, the broker will respond by placing a little tiny flag – known as a cookie – on your computer. This cookie* acts like a signal to all kinds of other websites around the internet, saying that you are someone who should be served up an advert for Fry’s Caribbean cruises. Whether you want them or not, wherever you go on the internet, those adverts will follow you.
