Retail Media Breakfast Club
Kiri Masters examines retail media networks, marketplaces and advertising technology through industry commentary, interviews and research.
Why read it
Useful for retail media practitioners assessing network positioning, buying complexity and changes across commerce advertising.
Audience & score
Public snapshotA snapshot of audience size and visible engagement, not a quality rating.
Where the figures come from
Checked on the official newsletter page. Counts can change.
Newsletter-specific subscriber count from the series header. The article footer displays 11,217 subscribers, which conflicts with the header and is not used. Exact publication dates, total reactions and comments were read on the three newest articles.
How the newsletter score works
An audience and engagement snapshot, not a quality rating. Version 1 combines up to 25 points for subscriber reach and 75 for visible edition engagement.
Reach = 25 × min(1, log₁₀(1 + subscribers) ÷ log₁₀(100,001)). Engagement = 75 × min(1, median((reactions + comments) ÷ subscribers) ÷ 1%). Add the components and round once. Reach is capped at 100,000 subscribers; median engagement is capped at 1%.
We use the three newest observed editions, all published within 90 days, and a snapshot no more than 30 days old. Missing or approximate counts, or missing exact dates, prevent a score. An edition under seven days old marks the score as an early snapshot. A viral edition alone cannot determine the median.
LinkedIn reactions include likes and other reactions. Comments can include replies; these are not unique readers, email opens or click rates. The denominator is the subscriber count when checked, not at publication. Age, cadence and platform differences limit comparisons. Private email metrics are not inferred.
Example: 10,000 subscribers and three editions with 40, 50 and 500 total reactions plus comments give a median of 0.5%: 20 reach points + 37.5 engagement points = 58 / 100. Choose alphabetical, score or subscriber order. These scores add no contributor leaderboard points.
Explore the editions
Read an edition at the source before you subscribe. Engagement figures are dated public snapshots.
- 01
Rocks, pebbles, sand: retail media eras, part 2
Discusses how retail media networks can compete through scale, specialisation or aggregation, with a GrowthLoop sponsor placement and disclosed commercial relationship.
14 reactions5 commentsChecked - 02
Retail media's four eras
Kiri Masters discusses overlapping phases of retail media technology and organisational constraints. Includes GrowthLoop sponsorship and a disclosed commercial relationship.
28 reactions11 commentsChecked - 03
Amazon Extends Its DSP Into ChatGPT Ads
Republishes a Jo Lambadjieva article with a Kiri Masters postscript about Amazon DSP and ChatGPT advertising. Includes GrowthLoop sponsorship; no additional series-author credit is inferred.
68 reactions17 commentsChecked
About these edition previews
Three newest LinkedIn editions, including a guest article republished with Kiri Masters’ postscript. Dates refer to newsletter publication, not the embedded article’s original date.
Reading notes checked .
Our notes & sources
The latest issue discusses network scale, differentiation and aggregation. It includes an explicitly labelled GrowthLoop sponsorship. Some references in this edition appear mislinked; follow-up source checking is needed before relying on its underlying claims. Newsletter delivery and industry claims were not audited.
Source checked .
Contributor credit
Each verified author receives 10 points for this newsletter. Co-authors receive their own credit; repeated issues and subscriber counts add no points.
- Kiri Masters: authorship evidenced on . This is not a newsletter launch date. View attribution