Seb Joseph

Covers ad-tech and agencies. Bylines at digiday.com. Desk record: 8 signals cited since August 2026, 7 published. Updated September 9, 2026.

Indexed from published reporting. Not a Fabric.Media staff byline. Any journalist can ask to be removed.

Coverage

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Brands start briefing creators to win over AI chatbots, not just audiences

Marketers now weigh two things when spending on creators: whether they move human audiences and whether they move algorithms inside AI platforms. That second factor hasn’t hit pricing yet, but it is already shaping creator briefs.

Retail-media wtf-is-the-amazon-ad-surcharge-lawsuit

WTF is the Amazon ad surcharge lawsuit?

The FTC and 22 state attorneys general allege Amazon secretly abandoned its second-price search ad auction, inserting a fake “soft reserved” bidder to push prices higher.

Sep 1

Ad-tech openais-chatgpt-ads-hit-1-billion-run-rate-opens-eu-self-serve

OpenAI’s ChatGPT ads hit $1 billion run rate, opens EU self-serve

OpenAI’s ad business is now annualizing at $1 billion in revenue less than 200 days after launch.

Sep 1

Ad-tech trade-desks-zuma-update-trades-disruption-for-polish-after-kokai-backlash

Trade Desk’s Zuma update trades disruption for polish after Kokai backlash

The Trade Desk’s Zuma release adds UX fixes, faster lift studies and a Koa AI assistant to Kokai, plus the option to route agents through outside tools like Claude rather than forcing everything into its own interface.

Aug 30

Agencies wpps-legal-woes-mount-but-clients-arent-fleeing-yet

WPP’s legal woes mount, but clients aren’t fleeing yet

WPP faces a former exec’s kickback lawsuit, a class action alleging execs misled shareholders for 19 months, and a Sony probe finding WPP kept 80% of publisher rebates. Clients like Coca-Cola still praise the holdco publicly.

Aug 24

Agencies court-filings-wpp-insiders-say-groupm-simplification-was-quietly-abandoned

Court filings: WPP insiders say GroupM ‘simplification’ was quietly abandoned

Exhibits in a wrongful-termination suit quote ex-WPP executives saying GroupM’s restructuring stalled by 2024, with cuts outpacing fixes. One called Choreograph’s data five years behind Publicis’s Epsilon.

Aug 19

Ad-tech ad-techs-public-market-exodus-four-delistings-in-a-year

Ad tech’s public-market exodus: four delistings in a year

Nielsen-DoubleVerify, IAS-Novacap, LiveRamp-Publicis and now Criteo-Vista mark four take-privates in a year, while public survivors like Trade Desk get punished despite growth.

Aug 14