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Part of Search advertising: an intent and outcome framework
Mismanaged negative lists top the list of search advertising mistakes
Search advertising mistakes include unmanaged negatives, account conflicts, weak pages, unsupported claims, false conversions, hidden costs, and access gaps.
What to take away
- Negative keyword lists fail when nobody owns them, so eligible queries get blocked while poor ones keep spending.
- Each list needs a named owner, a scope test on one campaign, and a change log with dates.
- Duplicate campaigns and shared logins cause the same outcomeno single person can explain a spend decision.
- Proxy conversions and blended averages both reward activity that never becomes revenue.
The seven mistakes at a glance
Seven faults account for most wasted spend. The third column is the repair.
| Mistake | Symptom | Fix |
|---|---|---|
| Mismanaged negative lists | Eligible queries blocked, poor ones spending on search partners or Performance Max | One owner per list, scope test, change log |
| Competing campaigns | Two campaigns chase the same query | Assign priority, consolidate structure |
| Unproven destination | Clicks arrive, qualified actions do not | Match page to query and policy |
| Unsupported message | An asset combination implies something untrue | Claim register, pinning, removal |
| Proxy conversion | Bidding rewards easy low-value events | Import downstream status |
| Blended economics | Expansion erodes contribution | Marginal cost and capacity limits |
| Shared logins | No accountable change or clean exit | Named seats, MFA, same-day revocation |
Rebuilding a negative keyword list
One negative list can be applied across many campaigns, which is why an unowned list compounds. It blocks eligible demand and leaks poor spend at once. The repair is ownership plus a repeatable screen.
- Name one owner per list, who approves every addition and removal.
- Pull 90 days of search terms and sort by cost. A common starting threshold is 20 or more clicks with no conversion.
- Test scope on one campaign for two weeks. Compare qualified actions before widening.
- Record each change with date, reason, and the source report.
- Recheck search partners and Performance Max, where account-level negatives behave differently from campaign lists.
If the queries behind those terms are still unclear, inspect queries before bids before you widen the list.
Duplicate campaigns that bid against each other
Two campaigns on the same query raise your own cost per click and split conversion data. Google's account structure guidance treats overlapping campaigns and thin ad groups as signals to restructure.
Assign priority by business value: brand first, high-intent service second, research third. Keep the broad campaign off priority queries with a shared negative list.
The same overlap appears in paid media plans beyond search. Paid media strategy mistakes tested against experience shows which versions survive a client review.
Shared logins and handover records
A shared login leaves no audit trail. Give each operator a named seat, turn on multi-factor authentication, and keep recovery details with the account owner rather than in a chat thread.
When someone leaves, revoke access the same day and reassign their lists and campaigns to a successor. Log both actions.
When the destination page fails the promise
Google's destination requirements policy covers functionality, crawlability, access from the targeted location, and destination mismatch. Passing that policy says nothing about whether a page persuades or tells the truth.
The fix is a match test. The ad promise, the page headline, and the form or checkout should restate the same offer. A page that cannot do that needs rewriting before budget rises.
Example: the form fill that never closed
Suppose a B2B team counts every demo request as a conversion. Target CPA bidding then buys cheap requests from students and job seekers. Cost per request falls and qualified pipeline does not move.
Import the CRM stage as the conversion action and bid toward qualified opportunity. For matched-market tests of that repair, search advertising examples show how intent capture and offer framing shift together.
Documenting the repair
The GAO data reliability guide treats reliability as fitness for a stated use and expects a documented assessment, which suits an account correction as well as a federal report.
The FTC advertising substantiation policy requires a reasonable basis before an objective claim goes out, so publish performance numbers with the working behind them.
A dashboard change does not close a fault. Trace the fix from the source record through processing, reporting, and the decision owner.
Correction Trace Steps
- Trace correction from source record
- Preserve prior value, reason, date
- Test whether defect can recur
- Turn error list into operating control
- Keep evidence record beside decision
- Set next review date and trigger
Keep the evidence beside the decision: prior value, reason, date, reviewer, and the action it changed. Then test whether the fault can return, and name the trigger for an earlier review.
Readers arrive with different questions, and common search advertising questions answers the ones about negatives first.
