Pop traffic is an ad format that opens the advertiser's landing page in a new browser tab or window triggered by a click anywhere on a publisher's page. A popunder opens behind the current window and is seen when the user closes or minimises it; a popup opens in front.
Definition
Pop traffic is an ad format that opens the advertiser's landing page in a new browser tab or window triggered by a click anywhere on a publisher's page. A popunder opens behind the current window and is seen when the user closes or minimises it; a popup opens in front.
The user did not choose to visit the advertiser, so pop traffic is a full-page interruption with no creative — the landing page itself has to do all the work of engaging a user who arrived unexpectedly.
Pop is the highest-volume, lowest-cost, lowest-intent of the common performance formats. CPMs are very low, inventory in cheap GEOs is effectively unlimited, and there is no creative to design or fatigue.
The corresponding downside is that most pop visits are unintended and disengaged, so conversion rates are low and the format only works with a compelling, fast landing page, tight targeting and heavy source filtering.
In context
For iGaming, pop can deliver cheap first deposits in Tier-2 and Tier-3 markets if the funnel is built for it: an instant-loading landing page that states the offer in the first second, a very short registration path, and often a prelander that gives the unexpected visitor a reason to stay. Because there is no creative, the levers are the landing page, the GEO and device targeting, the bid, and the source blacklist/whitelist built from zone-level conversion data.
Pop inventory quality varies enormously and includes a lot of bot and forced-redirect traffic, so anti-fraud and source filtering are not optional. Buyers also watch for the format's specific abuse patterns — pops triggered multiple times per session, pops from adult or piracy sites that breach the advertiser's brand-safety rules, and inventory that is really cloaked redirects.
Pop sits at the grey end of the format spectrum for iGaming: it is used, but it is a poor fit for licensed Tier-1 acquisition and for any operator that cares about where its brand appears.
Worked example
A buyer sends pop traffic in Indonesia to an instant-loading casino prelander. Raw conversion is 0.2%, but at a $0.6 CPM the cost per registration is workable.
A zone blacklist built after $400 of spend removes the worst 60% of inventory (bots and multi-pop sites), and cost per FTD settles at $28 — viable for that GEO but not scalable to Tier-1.
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