Google, Microsoft, And OpenAI Plan To Honor Shared AI Training Opt-Out
A shared robots.txt line could let sites opt out of AI training with several providers at once, but companies involved are handling it differently.
Edition of Sunday, November 1, 2026
10 stories · Updated · Latest edition
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Archive →Attribution & Measurement
Marketers Must Test Incrementality Before Peak Spending
Waiting until Cyber Week is too late. Run holdouts early enough to see which channels create lift, then move budget before the expensive days arrive.
Analytics & Data
Stagwell And DoorDash Make Strategic Acquisitions
It’s fall, M&A is in the air. Two acquisitions happened this week: Stagwell bought Freestar and DoorDash bought Instacart.
Ad Tech
Ulta Beauty Launches Holiday Campaign Featuring Selena Gomez
Ulta Beauty’s holiday campaign features Selena Gomez and Tate McRae, whose brands are both sold at the retailer.
Ad Tech
Advertisers Must Focus On Creative Diversity
20 ads may all test the same idea. Better performance comes from changing the variables that give the algorithm something new to learn.
Search Data
Google Launches AI Mode For Festive Gift Shopping
Google’s new homepage pop-up invites users to try AI Mode for festive gift ideas, product recommendations, visual shopping results, and price comparisons.
Search Data
Ahrefs Blog Tracks Stability Of AI Citations
Key takeaways: Treat citation volatility as normal. It seems to be a built-in trait of AI answers, and it may change significantly with model updates. So, aim to appear more often over time, not to hold every citation without interruption. … Read more ›
