By using the Facebook tracking pixel or the Adwords pixel, you can help to define your audience and work to entice them to come back to your site. Let's say the didn't finish their purchase or they simply showed up and left after adding something to their shopping cart, or they filled out a lead form and disappeared, you can re-target those individuals.
We expect advertisements to be visible. However, you should not let the advertisements distract users or prevent them from consuming the site content. For example, advertisements, supplement contents, or interstitial pages (pages displayed before or after the content you are expecting) that make it difficult to use the website. Learn more about this topic.38