The Google September 2026 spam update delivered two distinct ranking impacts within a single week, with the first volatility hitting over the weekend and a second, harder wave striking on Wednesday and Thursday, September 30. Tracking coverage of both waves suggests this is one of the more aggressive spam-focused rollouts of the year, though Google has not yet confirmed completion.

The spam update dominated the week, but the most quantified story came from the AI contribution pilot. A report says Google is paying roughly 100 publishers, and the total comes out to about 0.1% of their ad revenue. For publishers weighing whether to participate in Google's AI content-licensing programs, that figure sets a sobering baseline for what compensation currently looks like.

AI Overviews expand and reshape the results page

Google is now returning AI Overviews for brand queries and team rosters, a notable expansion beyond informational intent. Where AI Overviews once stayed clear of navigational searches, large brand names now trigger them — a shift that pushes organic brand listings further down the page.

Google is also testing citation cards at the bottom of AI Overviews rather than on the right side, a layout it has trialed before. In a related UI test, the "Show more" button on AI Overviews may be replaced with a "Loading" indicator. Separately, Google rolled out AI Mode's monitoring capabilities globally, giving site owners more visibility into how their content performs in AI Mode.

On the legal front, Penske's lawsuit against Google over AI Overviews was dismissed. The court's reasoning hinged on the absence of an agreement between Penske and Google, not on the merits of AI Overviews themselves. Google also appealed the EU Digital Markets Act mandate requiring it to share search data, a fight that has Google's Nick Fox publicly saying he feels "sad and terrible" for European searchers because of DMA-driven changes to the search experience.

Maps, Business Profiles, and Local Services Ads wobble

Local search had a rough week. Google Maps now requires users to sign in to see all reviews, a change that will likely reduce casual review browsing and could affect how businesses gauge their review visibility. A separate Maps bug placed some business pins in the middle of the ocean — embarrassing, if temporary.

Google Business Profiles added a new policy covering misuse of support channels, so businesses that abuse support escalation paths now risk enforcement. Local Services Ads had two problems: a bug that serves advertisers in locations they do not service, wasting budget on out-of-area leads, and a default behavior that hides advertiser phone numbers before showing them later.

Ads platforms move on both sides of the market

Google is testing a sponsored products grid designed to look like the organic product grid, blurring the visual line between paid and organic shopping results. If it rolls out broadly, retailers should expect the paid grid to capture clicks that previously flowed to organic product listings.

Microsoft Advertising made its optimization experiments generally available worldwide, giving advertisers automated testing at scale. Bing is testing a one-line consumer review extension for sponsored ads. OpenAI shipped a batch of ChatGPT Ads updates, including bulk product creation and product review status features — a sign the nascent ChatGPT ads ecosystem is maturing quickly.

Smaller changes worth a glance

Google is testing dropping the "I'm Feeling Lucky" button from the search bar, potentially retiring one of its oldest Easter eggs. And Google celebrated its 28th birthday over the weekend with a doodle that routes users to a Google AI Mode quiz — a small but telling signal of where Google wants searchers to spend time.

The October 2026 Google Webmaster Report, published this week, aggregates the month's changes for anyone catching up.

For the weeks ahead, watch whether Google confirms the September 2026 spam update as complete and whether the second wave's losses recover, track how the brand-query AI Overviews expansion affects click-through rates for major domains, and monitor the EU appeal, which could reshape data-sharing obligations — and the European search results page — for years.