Remember when Internet advertising consisted of pop-ups and banner ads promising prizes to the 1,000,000th visitor?  Or guaranteeing that if you managed to smash the fly, you would receive a free iPod? I think we can all agree it’s a good thing those days are over.

Today, Internet advertising takes many forms, but chief among them is collection of ads associated with a remarkable little thing called a “remarketing pixel.” By embedding the remarketing pixel—a creative little piece of code that acts as an advertising multi-tool—into their website, webmasters can gain access to an array of new tricks.