Online marketers know that the words people type into search engines are by far the most important indicator of interest or purchase intent.
With search retargeting, your display ads are shown on sites all across the web, but only to people who have recently searched for your specific keywords on Google, Bing, Yahoo, price comparison sites, product review sites and vertical search sites.
You attract website visitors, but let’s face it, not all of them make a purchase. Research has shown that typically only 2% of website visitors convert on their first visit.
With site retargeting, your display ads are shown on sites all across the web, but only to those people who have visited your website and left without making a purchase.
IAB approved ad sizes: