Referral & Affiliate News

Amazon Blocks Meta’s Muse Shopping Agent

On September 21, Amazon started rejecting purchases from Meta’s Muse AI assistant. Shoppers saw an error saying that “continued access by an unauthorized AI agent violates Amazon’s Conditions of Use,” TechCrunch reported. Meanwhile, Meta partnered with Shopify so Muse can use Shop Pay to check out at Shopify stores. For affiliates, the takeaway is that AI agents are becoming the new gatekeepers, and the big marketplaces don’t all have to let them in.

Google Auto-Enrolls Shopify Merchants in AI Mode Checkout

On September 22, Shopify merchants got emails saying Google had turned on native checkout inside AI Mode and Gemini for them, PPC Land reported. Merchants who don’t want it have to opt out under Sales channels > Agentic. Because the purchase happens on Google’s own page, custom pixels and client-side GA4 tracking don’t fire. That’s a real attribution problem for anyone paying commissions based on last-click data.

YouTube Turns Ask YouTube Into a Shopping Surface

YouTube added shopping features to its conversational Ask YouTube tool. It now pulls product review videos into comparison tables and lets viewers ask follow-up questions from the watch page. YouTube says more than 140 million users used Ask YouTube on watch pages in June. For creator-affiliates, well-organized review videos just got more valuable.

How to Catch Affiliates Bidding on Your Brand

A September 24 Search Engine Journal guide explains how affiliate brand bidding pushes up your CPCs while partners collect commission on customers who were already searching for you. The four-step audit is: define violations, build a list of branded test queries, screenshot suspicious ads, and trace redirect paths back to affiliate IDs. If you’re building a SaaS affiliate program without a platform, put brand-bidding rules in your terms from the first day.

ChatGPT Ads Now Appear in 47% of Gaming Chats

Comscore’s Q2 2026 AI Intelligence Report found that sponsored ads showed up in 47% of ChatGPT gaming conversations in June, up from 3% in March. Toys & hobbies went from 5% to 24%. Books, music & video went from 9% to 22%. That’s a fast buildout of a paid channel that competes directly with affiliate content for AI shopping intent. It’s one of the week’s most important affiliate marketing news stories for publishers.

Marketing Tactics

McDonald’s Launches a $1B Retail Media Network

According to Marketing Dive, McDonald’s is starting a media network across 450 company-owned U.S. restaurants. It will sell third-party ads on its app, kiosks, and menu boards and aims for more than $1 billion in revenue. The chain is also shifting to fewer, bigger brand campaigns and fewer promotional cycles. In short, first-party customer attention is now a product it can sell.

Wayfair Delivers Puts Rewards Front and Center

On September 21, Wayfair launched “Wayfair Delivers,” a new brand platform starring QB Matthew Stafford. It also raised its football ad spend to five times the previous level. The campaign features Wayfair Rewards and Wayfair Verified as reasons to buy, so retention perks are part of the main pitch. Small retailers can do the same on a smaller budget. See our playbooks for a bookstore loyalty program and loyalty ideas for breweries and wineries.

Pinterest Adds a Performance+ Optimization Score

On September 21, Pinterest launched an AI-driven campaign optimization score. It rates how well your setup follows best practices: using Performance+, running creative variations, targeting broadly, and keeping budgets steady. Pinterest recommends at least three ad formats per ad group and says Performance+ users have seen about 10% better CPC and CPA.

Threads Ads No Longer Require an Instagram Account

Meta dropped the rule that Threads advertisers need a matching Instagram account. Businesses can now run ads straight from a Threads profile, and the change is rolling out gradually this month. Threads has 500 million users, so B2B and service brands that never built an Instagram presence now have a new channel to test.

Google Search Traffic to Publishers Down 40%

Chartbeat’s 2026 Publisher Playbook found that Google Search referrals to publishers fell 40.2% year over year, and Discover fell 34.3%. Direct traffic and dark social grew. Owned channels are carrying more of the load, which is another reason to put effort into a weekly newsletter customers actually read.

Small Business Growth

SBA Extends Size-Standards Comment Period to November 20

The SBA gave the public 60 more days to comment on its overhaul of small-business size standards, which now runs through November 20, 2026. The proposal would reorganize 338 industry groups and, by SBA’s estimate, make more than 114,000 additional firms eligible for small-business status. If you go after government contracts, check your NAICS code now.

Google Business Profile Owners Get a 4-Day Edit Window

Google updated its help docs to say that business owners have four days to accept or reject edits suggested by users. After that, Google may publish the edit automatically if it matches other public information. Turn on notifications and look at your profile every week. This matters as much as the listing work in our guide to getting listed on industry directories that drive traffic.

Search Console Adds a Multimodal Filter

Starting September 24, Search Console’s Performance report can filter traffic from Google Lens, Circle to Search, image uploads, and Chrome’s “Search this image.” There’s no query-level data, but stores with product photos can finally see which pages get visual-search traffic.

Google’s September 2026 Spam Update Is Rolling Out

Google’s fourth confirmed spam update of the year started on September 24 and could take up to two weeks to finish. That’s longer than any spam update earlier this year. Affiliate sites with thin coupon or comparison pages should watch rankings closely through early October. For more context on this week’s affiliate marketing news, see last week’s ReferralEarl roundup.

Sources

• TechCrunch — Meta’s AI agent has been blocked from using Amazon.com
• PPC Land — Google switched on AI Mode checkout for Shopify stores without asking
• Search Engine Journal — ChatGPT Ads Climbed In 3 Retail Categories, Led By Gaming: Comscore
• Marketing Dive — Inside McDonald’s new marketing model as it enters media network fray
• Search Engine Journal — Google Search Decline Steepened To 40% YoY For Publishers

Frequently Asked Questions

What was the biggest affiliate marketing news this week?

Amazon blocked Meta’s Muse shopping agent, and Google automatically turned on in-AI checkout for eligible Shopify merchants. Both stories show AI agents becoming a new layer between shoppers and stores, which affects how affiliates get credit for sales.

Does Google’s AI Mode checkout affect affiliate tracking?

Yes. The purchase happens on Google’s page, so custom pixels and client-side GA4 tracking don’t fire. Merchants who pay commissions on last-click data should review attribution or opt out under Shopify’s Sales channels > Agentic settings.

How can I tell if an affiliate is bidding on my brand name?

Build a list of branded search queries, test them in clean browser sessions, screenshot any ads you find, and follow the redirects to spot affiliate tracking IDs. Then match that evidence against conversion records and your program terms.

How fast are ChatGPT ads growing?

Comscore found sponsored ads in 47% of ChatGPT gaming conversations in June 2026, up from 3% in March. Toys & hobbies and books, music & video also grew sharply.

What should small businesses do about the September 2026 Google changes?

Answer suggested Google Business Profile edits within four days, try the new multimodal filter in Search Console, and watch rankings while the spam update rolls out over the next two weeks.