Affiliates bidding on your brand keywords can inflate your CPA, cannibalize your own paid search traffic, and create attribution confusion. A clear paid search policy prevents all three.
The Paid Search Affiliate Problem
When affiliates bid on your brand keywords in Google Ads and Microsoft Ads, they appear in paid search results alongside or above your own brand campaigns. A user searching '[your brand name]' clicks an affiliate's paid search ad, then converts on your site — the affiliate claims commission for a conversion that was virtually certain to happen anyway (the user was searching your brand name; they were already a high-intent buyer). The affiliate paid search cost (their ad spend) is invisible to you, but the commission you pay is very real — and your effective CPA for brand-search-driven conversions is now commission + whatever else you spent on that customer.
Brand keyword bidding by affiliates is a classic attribution arbitrage play: affiliates capture last-click credit by inserting themselves into the very bottom of the funnel.
The Three Paid Search Scenarios to Address in Policy
1. Brand keyword bidding (highest priority to restrict)
Affiliates bidding on '[brand name]', '[brand name] + product', '[brand name] + discount', etc. This is the most common paid search abuse — affiliates can drive significant volume by bidding on brand terms that are cheap to bid on (Quality Score is high because the landing page is your site) and that capture conversions with near-100% purchase intent.
Policy: prohibit brand keyword bidding unless explicitly approved. Enforce with automated tools or periodic manual monitoring of brand search results.
2. Generic/competitor keyword bidding
Affiliates bidding on generic category keywords ('[product category]', 'best [product type]') or competitor brand terms to capture traffic. Less directly harmful to your brand, but creates SEM conflicts if your own team is bidding the same keywords.
Policy: allowed unless it creates direct conflict with your SEM strategy; require affiliate to use your affiliate link (not homepage URL) so conversions are tracked.
3. Trademark + generic combinations
'[Brand name] discount', '[Brand name] coupon', '[Brand name] promo code' — the most common violation because it drives conversion-intent users who may not have been aware of a discount opportunity before seeing the affiliate's ad.
Policy: restrict unless you're actively running a promotion and want affiliates to amplify it.
Enforcing Your Paid Search Policy
- ◆Include explicit paid search terms in your publisher agreement with clear consequences (immediate termination for brand keyword violations)
- ◆Use brand monitoring tools (BrandVerity, TrademarkBot) to detect affiliate paid search violations automatically — manual monitoring is not scalable
- ◆Configure your network to support paid search restriction: Impact and CJ allow you to specify paid search restrictions in publisher terms
- ◆Run spot checks quarterly: Google your brand name in incognito mode and check if any paid search results contain affiliate tracking URLs (a telltale sign of brand keyword bidding)
- ◆Issue warning for first violation with documentation; terminate for repeated violations
When to Allow Paid Search
Consider allowing paid search by approved affiliates when: you have significant geographic gaps in your own paid search coverage; you're entering a new market without an established SEM presence; or the affiliate is bidding on competitor terms where you don't have an active campaign.
Always require pre-approval and monitor conversion patterns carefully — affiliates running paid search generate artificial conversion spikes that can mask real program performance.
Building Your Paid Search Policy Clause
A complete paid search policy clause should include:
- ◆A definition of prohibited search terms (brand name, brand name variations, misspellings, trademark + generic combinations)
- ◆Explicit prohibition on bidding on your brand terms in any paid search platform (Google Ads, Microsoft Ads, Yahoo Ads)
- ◆Prohibition on using your brand name in ad copy or display URLs without approval
- ◆Consequences for violation: first offense warning and removal of non-compliant ads within 24 hours; repeat offense termination and commission forfeiture
- ◆A process for requesting exceptions (approved paid search campaigns require written approval with defined time window and keyword list)
Most brands discover paid search violations during routine quarterly audits — the policy only works if you enforce it consistently. Publishers who know you monitor and enforce are unlikely to violate; publishers who know you do not monitor will exploit the gap.
