In 2020, the Dutch public broadcaster NPO got rid of cookies and saw its revenues improve. This is held up as a hopeful example that privacy and publisher monetization can coexist. I want to share three comments. 🧵 1/8 wired.com/story/can-kill…
NPO claims that revenue rose 70% year-over-year in the first 2 months without cookies. This is an impressive achievement unlocked by building their own ad server, next generating contextual targeting, marketing to advertisers, etc. 2/ brave.com/publisher-3rd-…
Comment #1: This case study is hard to assess because year-over-year changes are far from apples-to-apples comparisons. Much can change between years that would confound our interpretation--beyond the many changes NPO implemented. 3/
For instance, I read this figure as showing very large increase in the quantity of ads sold by NPO. This suggests revenue increases are driven by quantity rather than ad prices, which may even be falling. 4/
#2: The GDPR creates legal risk from cookies, but strict compliance is low among websites. I think this fosters a “flight to safety” effect whereby a premium pub like NPO (or nytimes) can carve out a niche among advertisers who are GDPR-risk adverse. 5/ digiday.com/media/gumgumte…
However, I am concerned that this market position will erode with browser changes or stricter GDPR enforcement and that this position is too weak to accommodate all publishers. In other words, there aren’t enough life boats for everybody. 6/
#3: Let’s remind ourselves of the broader context, when weighing one publisher’s case study. Most studies on the value of cookies—across thousands of publishers & advertisers—show cookies double or triple the value created by ads. 7/
What’s more, 2 studies show news & general content is hurt *even more* by losing cookies. Consider: what advertiser wants to buy ads on this (socially-valuable) news story? As such, I worry how news & the open web will fare under privacy changes however well intentioned. END
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🤔DO ADS ACTUALLY WORK?🤔
🧵We tackle this question using a large collection of display ad field experiments in a working paper with @EconInformatics & @enub
"The Online Display Ad Effectiveness Funnel & Carryover: Lessons from 432 Field Experiments” ssrn.com/abstract=27015… 1/8
Recently, the effectiveness of advertising has been called into question. Some of this skepticism is healthy. Measuring the effect of advertising properly is *really* difficult, as I detail here:
On average, our ad experiments run for 20 days & contain 4M users: 1.6B user-campaign observations in all! Our data come from the 1st months of Google’s Conversion Lift & Brand Lift products, which are powered by our (predicted) ghost ads methodology: doi.org/10.1509/jmr.15… 3/
🚨Working paper update!🚨
🧵Post-#GDPR, website use of tech vendors fell 15% but relative concentration increased 17%.
"Privacy & market concentration: Intended & unintended consequences of the GDPR” w/ Scott Shriver & @samgarvingold ssrn.com/abstract=34776…
(Image: Digiday) 1/14
Privacy and competition top today’s policy agenda particularly in tech. Google & Facebook capture 56% of global digital ad spend. They also face regulatory scrutiny on both sides of the Atlantic on both counts.
But, could #privacy policy actually reduce #competition? 2/
How? Large firms could have more resources to comply with the law or leverage firm recognition to better obtain consumer consent.
New: If privacy law pushes firms to limit data vendors, firms may favor retaining large vendor that offer better products (or compliance). 3/
Today, I spoke at the W3C improving web advertising business group about the economics of digital ad identity. Thread🧵 on some takeaways on the future of digital ads. 1/
Cross-site identity (via cookies) allows for behavioral targeting. Importantly, identity allows for less sexy but *critical* functions like ad frequency capping, ad effectiveness measurement & attribution—all at scale. 2/
What is the value of cookies? In the status quo, most studies and data agree that cookies create value: ads get 50-70% less revenue without cookies. 3/
“Abandon all hope, ye who enter here” - Dante’s Inferno👿
Online display ad experiments are hell. They are also a proving ground for field experimenters, & have much to teach us. The guide is organized into the nine 9 circles of 🔥hell🔥 as applied to #displayad#fieldexperiments
🔥Circle 1🔥 Display ad effects are so small🤏 that observational methods fail🤦♀️. Ad effects explain so little variation in ad outcomes, that they get swamped🌊 by unobserved confounds. Like Dante entering the inferno👿, we resign ourselves to the necessity of experiments.😭😭
The @guardian featured an opinion piece about how the #GDPR is failing to protect privacy.
The piece serves as an unintentional object lesson of the same. THREAD 1/ theguardian.com/commentisfree/…
Here is the excerpt where the author decries prevailing opt-out practices alongside the Guardian’s consent menu doing the same.
Note: The @ICOnews states that this menu is not #GDPR compliant (“NO" should be as easy as "YES"). 2/
When I VPN as a French user The Guardian interacts with 42 third party domains (listed below) and loads 122 third party cookies.
Note: All this arises without my opt-in consent. 3/
🚨New working paper alert!🚨
THREAD: Post-#GDPR, website use of web tech vendors falls 15% but relative concentration increases 17%.
"Privacy & market concentration: Intended & unintended consequences of the GDPR” w/ Scott Shriver ssrn.com/abstract=34776…
(Image: Digiday) 1/
Privacy and competition top today’s policy agenda—particularly in web tech which relies on permissive privacy practices and where big companies like Google & Facebook have large market share.
How? Large firms could have more resources to comply with the law or leverage firm recognition to better obtain consumer consent. We add that potential B2B partners could favor large firms if 1) they offer a superior product; or 2) they better comply with the law. 3/