Most digital advertising decisions feel reasonable when you make them. Scale what’s performing. Chase the cheapest lead. Trust the metric that’s moving in the right direction.
In early May, Brodie McMaster, our Senior Performance Media Specialist, flew across from Melbourne to run two sold-out masterclasses in Perth. She argued that the decisions most advertisers feel confident about are often the ones worth questioning most.
When the Data Lies Confidently
Performance advertising gives you more visibility than almost any other channel. You can see what’s clicking, what’s converting, what’s costing. That level of transparency feels like understanding, and at modest spend, it often is.
The problem arrives at scale. A campaign that performs cleanly at $5,000 a month can look completely different at $15,000. The metrics that felt like proof start to soften. Cost per acquisition creeps up. The audience that converted so reliably starts to thin out. What looked like a scalable strategy turns out to have been an efficient way of reaching a small, warm group of people already close to buying.
This tension runs through every mistake the session covered: the data isn’t wrong, it’s just describing something smaller than you think.
Working Isn’t the Same as Growing
When most marketers ask “is it working?”, they mean: are we getting conversions, leads, sales. That’s a reasonable thing to measure. The problem is that optimising toward those signals alone tends to pull budgets toward the warmest, most ready-to-buy audiences — the people already familiar with the brand, already close to a decision. Growing looks different. It’s softer interactions with a broader audience: people encountering the brand for the first time, forming early impressions, entering the consideration phase long before they’re ready to convert. That activity rarely shows up cleanly in a conversions report, which is exactly why it gets defunded.
The Sins That Follow
Brodie’s session covered seven patterns that emerge from this confusion. Four in particular are worth exploring here:
- Worshipping the Winner is the impulse to scale whatever’s performing best. Today’s top performer is often the asset delivered to the warmest, most familiar audience, the people easiest to convert because they were already close to a decision. Scale the budget and you exhaust that audience faster than expected, while the broader market stays untouched.
- Chasing Cheap follows the same logic. A $30 lead looks better than an $80 one until you run the numbers end to end. At a 5% close rate, that $30 lead costs $600 per sale. The $80 lead, closing at 25%, costs $320. Lower intent at acquisition often means more sales time, weaker close rates, and more refunds downstream.
- The ROAS Trap is what happens when last-click attribution gets treated as the full picture. The click that converts gets the credit. The awareness activity that introduced the brand and shaped the consideration gets nothing. Budgets migrate toward the bottom of the funnel because that’s where reported returns look strongest. The top runs out of steam. The pipeline narrows.
- Blaming the Traffic is the instinct to assume poor conversion rates mean the wrong people are clicking. Often the traffic is fine but the ad promised one thing and the landing page delivered another, the form asked too much too soon, or the page gave no real reason to trust the brand.
These patterns are caused by data that confirms the decision before the decision gets properly examined. That’s what makes them difficult to spot and costly to keep running.
Gut feel can start the question. Sharper diagnosis should finish it.
We run masterclasses like this throughout the year for clients and business owners across Perth and Melbourne. To register interest in the next one, get in touch via our Contact page.