AI Overviews surfaced on branded search queries at three times September's prior rate, according to DemandSphere data published October 1, 2026. Search Engine Roundtable's daily recap logged the expansion alongside two new AI Overview surfaces: large brand names — excluding "Google" and most news publishers — and team-roster queries, where Google now generates a roster answer instead of returning links.

What did the September spam update do, and where does it stand?

The October 2026 Google Webmaster Report leads with the September 2026 spam update, which "started off strong and is still rolling out," per Search Engine Roundtable's Barry Schwartz. Lily Ray posted on Bluesky: "For how much Google writes about 'inauthentic mentions,' you'd think they'd be better at combating it." On X, she added: "The sites getting hit by Google right now for scaling low quality AI content are actually producing many of the exact same page types and templates that companies scaled with freelance writers before 2023. History repeats itself."

That tension defined the week. Google simultaneously tightened AI-content quality signals and pushed AI Overviews into navigational queries.

What changed in Microsoft Advertising?

Microsoft moved optimization experiments to general availability across Search, Shopping, Audience, and Performance Max campaigns. Microsoft's help center defines the feature as a "controlled A/B test" that measures the impact of a campaign change. The release closes a long-running parity gap with Google Ads Experiments.

What is new in ChatGPT Ads?

OpenAI emailed advertisers this week with four ChatGPT Ads updates:

• Bulk creation for product feed campaigns
• A product review status column
• API-level reporting of conversions beyond the campaign goal
• Separate account, brand, and legal name fields

ChatGPT Ads also went live in Southeast Asia and Taiwan.

Why are Local Service Ads targeting the wrong locations?

Advertisers report a Google Local Service Ads bug: ads from advertisers who did not declare a service area are serving for queries outside their targeted geography. An advertiser can already restrict matches to a city; Google's matching logic appears to ignore the constraint for some queries. Search Engine Roundtable flagged this as a likely bug rather than a confirmed policy change.

What is happening to the Google Search interface?

Two tests drew attention. Google is dropping the "I'm Feeling Lucky" button again — gone entirely for some users after they begin typing, replaced in other cases by AI buttons. A second test reshapes the "more products" grid: Google now shows three products by default, expandable to four or five, or shrinkable back to three. Neither test has a confirmed rollout date.

Google also quietly added a line to its destination-not-working policy document: campaigns with no asset group can return an "invalid final URL" error even when the landing page works. Google told advertisers the update provides "additional examples for destination issues."

How are publishers and retailers positioned in AI answers?

Two Search Engine Land pieces framed the commercial impact. "Google AI contribution pilot earns publishers one-tenth of 1% of ad revenues" put publisher compensation well below AI answer usage. A separate piece, "ChatGPT and Google AI favor large retailers in shopping answers," tracked the same tilt toward brand-recognized inventory in generative results.

What should you monitor next?

Watch three signals in the next two weeks:

• Completion of the September 2026 spam update rollout and any documented overlap with AI Overview expansion into brand and roster queries
• Resolution of the Local Service Ads location bug before Q4 holiday ad budgets ramp
• Whether Microsoft's GA optimization experiments move budgets between Search and Performance Max at measurable scale