<i>Retargeting is a technology that uses a piece of code to serve ads to folks who have not signed up for CB Insights, but have visited our website. If you’ve heard of browser cookies, but never really knew what they did, this is it.</i><p>Err, no, not really. The cookies from your website are to allow people to login and follow them over your property.<p>In order to target someone for 'retargeting ', you employ a third party to spy on your users and follow them round the web. That's done using third party cookies. This is precisely why third party cookies should be banned.<p>So if you've heard of browser cookies, there are two types, the good type, which help users, and the bad type, which maliciously track users. This is the bad type.