On Google's Search Off the Record, John Mueller said llms.txt cannot be processed as a sitemap and he would not treat it as a priority. PPC Land cites ProGEO.ai (7.4% of Fortune 500 firms have one) and Ahrefs (97% of files received no requests in a month).
SOCi's 2026 survey of more than 1,000 US consumers found 83% use search, 55% use social and 52% use AI to discover local businesses, and that 67% of AI users have received wrong local information at least once.
A preprint dated August 18, 2026 (arXiv 2608.18352) randomised 1,100 US Chrome users. Searches redirected to AI Mode had publisher click-through 18.8 percentage points lower than normal Search, and users reported lower trust and satisfaction.
Promptwatch recorded Reddit's share of ChatGPT citations at 3.8% from July 18 to August 7, then 0.5% from August 14 to 17. OpenAI says it does not set a fixed visibility level for sites, and Promptwatch calls the size of the drop provisional.
Semrush's AI Visibility Index 2026 analysed 126 million US prompts across ChatGPT, Gemini, AI Mode and AI Overviews. ChatGPT cited about 15 sources per response and Gemini about 3, and 45% of marketers cannot measure AI answer visibility.
Google Ads now lets advertisers preview up to 10 AI-generated headlines and descriptions for a landing page before opting in to text customization, and has added Brand Inclusions, Locations of interest, Commission and Optimized targeting columns.
Schema App's Andrea Badder reported a drop in Review Snippet visibility across healthcare customers from late May 2026, with a second drop in early August, and fixes such as different markup paths did not restore it. Google has not commented.
Google's UGC Fresh Data Program, announced October 8, 2026, lets approved platforms send user-generated content and interaction signals to Google through a dedicated pipeline, with no guarantee it will appear in Search.
Google's September 2026 spam update ran from September 24 to October 8, about 13 days 16 hours. Google named no targeted policy and said link spam was not the target; some SEOs report more manual actions, though the evidence is anecdotal.
On Search Off the Record episode 114 (October 1, 2026) John Mueller said a valid sitemap can show "couldn't fetch" because Google is busy or sees little need to crawl more from a site, which is often based on perceived quality.