Dynamic Remarketing Tag
When you are already advertising with Google Shopping (a part of Google AdWords, the ads with the product images and prices that come up when you search in Google), you can also start using Dynamic Remarketing.
With Dynamic Remarketing you can target people who have already visited your shop and show them the specific product of products they have been looking at earlier. So let’s say there’s someone who has been on your website and has been looking at a specific painting. This visitor even added the painting in the shopping cart, but unfortunately didn’t make a purchase.
In this case, the Dynamic Remarketing tag leaves a certain cookie with the specific product ID of the product he or she has been looking at. When this person now starts browsing on the Internet and when he or she lands on a website that is part of the Google Display Network (GDN, such as the Telegraaf, Buienrader, etc.) they will see banner ads of your webshop with the exact same product they have shown interest in before.
This type of remarketing has a very high success rate, since you are targeting a group of people that have already shown interest in your product. Some people even got as far as adding products to their shopping carts. However, while in the checkout process they might have gotten distracted or they didn’t have the time to make the purchase.
You can read more about Dynamic Remarketing here: https://support.google.com/adwords/answer/3124536?hl=en
This part of the script looks like this:
/* <![CDATA[ */
var google_conversion_id = Unique ID per shop
var google_custom_params = window.google_tag_params;
var google_remarketing_only = true;
/* ]]> */
<img height="1" width="1" style="border-style:none;" alt="" src="//googleads.g.doubleclick.net/pagead/viewthroughconversion/981766874/?value=0&guid=ON&script=0"/>