Home Online Advertising Re-Opening The Retargeting Campaign Kimono: Above-The-Fold Versus Below

Re-Opening The Retargeting Campaign Kimono: Above-The-Fold Versus Below


RetargetingUm. I missed a little detail in my retargeting/remarketing story published earlier this month.

I forgot about my retargeting campaign’s “exclusions.”

My apologies to Google, Larry and everyone else who wondered why I wasn’t getting that much reach with AdExchanger.com’s ongoing retargeting campaign through AdWords.

Please allow me to explain.

As many of you know, when you retarget or remarket with an ad network or demand-side platform (or even a publisher), these solutions will offer you the ability to target above-the-fold placements only. This significantly limits your ability to scale a campaign that is already limited by the number of cookies you have in your cookie pool, but some prefer above-the-fold because:

  • Brand – You want great positions on a web page in that you may think it helps reflect your brand’s quality.
  • Visibility – If it’s above the fold, it’s likely that your retargeting audience will see it and act or react. If it’s below the fold, they’re going to have to scroll.
  • Budget – For certain ad networks (such as Google’s AdWords) I’d say it’s cheaper to target above the fold! That’s counter-intuitive I know. But this is retargeting. If you’re low on budget and looking for max impact, the more scarce, above-the-fold inventory will actually limit your costs.  CPMs, as you will see from this tiny experiment, may be the same with the below-the-fold exclusion assuming all things were equal on the Google side (same inventory levels, auction competition, etc.).

This above-the-fold targeting parameter is something I had forgotten about in Google AdWords in the original article as I had excluded below-the-fold inventory long ago.

But what do the numbers look like when “below-the-fold” is added, you ask? Onward!

Showing You The Data

First, looking back…

In seven days, from November 28 to December 4, 2010, AdExchanger.com’s website was tracking at around 35,000 monthly unique visitors.  In that visitors are cookied whenever they visit AdExchanger.com,  a cookie pool of around 150,000 cookies had been amassed in Google AdWords since the beginning-ish of 2010. (Read the whole retargeting story for that time period here.)

AdExchanger.com asked its retargeting tool (Google AdWords which buys display through the DoubleClick AdExchange) to retarget users using the cookie pool with frequency capping such that users would see only one ad per week max -just enough to remind people to visit AdExchanger.com for their dose of data-driven, digital ad love and “Like” us on Facebook.


AdExchanger Daily

Get our editors’ roundup delivered to your inbox every weekday.

The results:

  • 14,255 impressions bought
  • $20+ CPM bid for each impression
  • Nearly 3/4 of all impressions bought were 728×90
  • 89 clicks for a clickthrough rate (CTR) of .62%
  • Average CPM of $6.95
  • Average CPC of $1.11
  • Total Spend $99.06

And then, as I said, I published the article earlier this month and realized AdExchanger.com was excluding below-the-fold impressions.  Oops.

The exclusion might explain the bias toward filling 728×90 impressions since many publishers like to put a 728×90 at the top of the page.

Keep in mind that AdExchanger.com had the same 9 banners (4-728x90s and 5-300x250s) running “evenly” for both time periods.  “Evenly” in  this case means that the retargeter (Google) will not optimize to the best performing banner, and instead maintain an even distribution of impressions among all available banners for the campaign according to available inventory.

The Below-The-Fold Reveal

In seven days, from January 7 to January 13, 2011, and with the cookie pool now expanded to around 170,000, and monthly site traffic tracking between 35 and 40,000 monthly unique visitors, the results were as follows:

  • 37,564 impressions bought
  • $20+ CPM bid for each impression
  • Impressions delivered were evenly split between the 728x90s and 300x250s
  • 163 clicks for a clickthrough rate (CTR) of .43%
  • Average CPM of $6.22
  • Average CPC of $1.43
  • Total Spend $233.52

As you can see, impressions delivered were about double this time as the cookie pool got a lot more coverage by adding below-the-fold placements.  In fact, the weekly reach seems roughly equivalent to the site’s monthly uniques. And, 728s were no longer the predominant size being filled.

But, CTR was down by about 30% likely driven in part by below the fold placements and unseen impressions as well as user boredom with the same media over the past couple months.  The cost per thousand impressions were only slightly more inexpensive averaging a $6.22 CPM.

The Takeaway

Cookie pools still degrade relatively quickly over time as January’s data showed only 20% of cookies targetable. If you want scale for your site retargeting campaign, prepare yourself for solutions such as look-alike cookie modeling which find you similar users along various audience or contextual segments. Also, using a DSP or ad network to target the cookie pool beyond a single supply source (DoubleClick Ad Exchange, in this case) is going to help.

By John Ebbert

Must Read

Advertible Makes Its Case To SSPs For Running Native Channel Extensions

Companies like TripleLift that created the programmatic native category are now in their awkward tween years. Cue Advertible, a “native-as-a-service” programmatic vendor, as put by co-founder and CEO Tom Anderson.

Mozilla acquires Anonym

Mozilla Acquires Anonym, A Privacy Tech Startup Founded By Two Top Former Meta Execs

Two years after leaving Meta to launch their own privacy-focused ad measurement startup in 2022, Graham Mudd and Brad Smallwood have sold their company to Mozilla.

Nope, We Haven’t Hit Peak Retail Media Yet

The move from in-store to digital shopper marketing continues, as United Airlines, Costco, PayPal, Chase and Expedia make new retail media plays. Plus: what the DSP Madhive saw in advertising sales software company Frequence.

Privacy! Commerce! Connected TV! Read all about it. Subscribe to AdExchanger Newsletters
Comic: Ad-ception

The New York Times And Instacart Integrate For Shoppable Recipes

The New York Times and Instacart are partnering for shoppable recipe videos.

Experian Enters The Third-Party Data Onboarding Business

Experian entered the third-party data onboarder market on Tuesday with a new product based on its Tapad acquisition.

Albertsons Takes Its First Steps Into Non-Endemic Advertising, Retail Media’s Next Frontier

Albertsons is taking that first step into non-endemic advertising next week via a partnership with Rokt to serve ads to people who have already purchased groceries.