Remarketing in PPC advertising, often referred to as retargeting, is a clever strategy employed by pay-per-click marketing agencies to re-engage users who have previously visited a website but didn't make a purchase or take the desired action. This technique allows businesses to show targeted ads to these visitors as they browse other websites or social media platforms. By reminding potential customers of products or services they showed interest in, a pay-per-click marketing agency can increase the likelihood of conversions. It's a subtle yet powerful way to stay connected with potential clients, driving them back to your site and enhancing brand recall.