On PPC Live The Podcast, I spoke with Peter Bowen, a Google Ads expert with nearly 20 years of experience who specializes in B2B lead generation.
Pete shared two big lessons from his career: always test the basics, and never assume your ad systems are working just because the campaigns look good.
A financial mistake that costs 10 times the budget
Pete Bowen shared an early mistake when a South African customer’s account was set up in the UK, making the currency in pounds instead of rands. That simple maneuver led to spending nearly ten times the budget target, yielding good results at first – but ultimately setting unrealistic expectations and losing the client.
Why checklists protect PPC groups
What was taken from that mistake was to make learning a formal process. Adding something as simple as checking currency to a setup checklist ensures that if a mistake is made, it won’t happen again — turning painful lessons into repeatable defenses.
The biggest problem: system decay
Aside from setup errors, Pete highlighted a subtle but common issue he calls “system decay” – when the infrastructure connecting ads, tracking tools, CRMs and sales processes slowly breaks down without anyone noticing.
Why data conversion failures hurt performance
When conversion data stops moving well, Google’s algorithms lose the feedback they rely on to improve. This can lead to cost reductions, poor performance or campaigns that simply stop delivering – even if nothing appears to be wrong within the platform.
PPC managers need to look beyond the interface
One of the biggest mistakes marketers make is focusing only on what’s happening inside Google ads. Strong performance depends on the entire journey, from clicks to conversions to revenue, and any break in that chain can undermine results.
What to do when a break tracking conversion breaks
If tracking fails, the key is to fix the problem quickly and, when possible, use data extraction to prevent bad data from influencing the configuration. Long-term, building monitoring systems that flag problems early are important to avoid recurring problems.
The risk of developing clicks
Pete also pointed out a common but damaging mistake: promoting clicks campaigns rather than results. Without proper conversion tracking, marketers can end up driving large amounts of traffic that never turn into leads or sales.
Why Performance Max needs solid tracking
Automation like Performance Max can exacerbate this problem, as it will follow any signals it receives. Without accurate conversion data, it can quickly measure irrelevant traffic, making strong follow-up a requirement before relying on automation.
Why bidding strategies require caution
Google’s bidding systems are powerful but realistic – they improve on whatever you define as success. That means that advertisers need clear goals, reliable data and reasonable monitoring rules, such as CPC limits, to avoid excessive or ineffective results.
Examining AI features carefully
With new tools like AI Max, risk doesn’t assess early — it assesses without a clear definition of success. Metrics like impressions and clicks are not enough; marketers need to measure the impact on qualified leads, sales and revenue.
The problem with “keep checking”
Peter also challenged the idea that everything should always be put to the test. Most accounts don’t have enough data to make small tests meaningful, which means time is often better spent improving the basics than chasing small gains.
The key to take
The broader lesson is straightforward: mistakes are part of the process, but only if they lead to better plans. Every mistake should result in a checklist, monitoring process or safeguard — to ensure it doesn’t happen again.
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