“Engagement” with a Lightbox ad on a mobile phone or tablet is achieved when someone:
- hovers their finger over the ad for at least 2 seconds
- watches the ad for at least 2 seconds
- expands or interacts with the ad
- watches the ad twice in a rob
Explanation: engagements are charged when the user engages with the ad. For expandable ad spaces, “user engagement” means that the user hovers, clicks, or taps to expand and the ad has time to load and be seen. For pre-expanded ads (like interstitials), “user engagement” means that the user interacts with the ad after it displays.