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The PostPod - Stop Buying Media on CPM

EP 179 · Mar 5, 2026 · 25 min · Marc & V

0:00 / 24:53

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When budgets tighten, marketers are told to find efficiency.

Cheaper CPMs.

Lower cost impressions.

More targeting.

Shorter ads.

It looks smart in a spreadsheet.

But according to Peter Field — often called the “Godfather of Effectiveness” — CPM may be one of the most dangerous metrics in modern marketing.

In this episode of The Sleeping Barber Podcast, hosts Marc Binkley and Vassilis Douros unpack their conversation with Peter Field and explore why marketers may be optimizing for the wrong things.

They discuss:

  1. Why CPM can distort media planning decisions
  2. The difference between impressions and real attention
  3. Why chasing cheap media can damage long-term brand growth
  4. How brand and performance marketing must work together
  5. Why metrics like price elasticity and market share growth matter more than dashboards full of clicks

If you’re being asked to “do more with less,” this episode challenges how marketers define efficiency — and what truly drives long-term growth.

Key Takeaways:

  1. CPM is often a misleading metric that can harm marketing effectiveness.
  2. Attention should be prioritized over impressions in advertising.
  3. Search strategies should integrate both SEO and SEM for better results.
  4. Long-term metrics are essential for understanding true marketing impact.
  5. Brand building is crucial for influencing consumer behaviour and decision-making.
  6. The conversation around marketing needs to shift from cost savings to value creation.
  7. Understanding the relationship between brand and performance marketing is vital.
  8. Effective marketing requires a balance between short-term and long-term strategies.
  9. Engagement metrics should reflect actual consumer behaviour, not just superficial data.
  10. Creativity in using marketing tools can lead to better outcomes.

Chapters:

00:00 Introduction to CPM and Marketing Metrics

03:14 The Dangers of CPM: A Deep Dive

05:59 The Shift in Marketing Metrics: From Impressions to Attention

09:04 Understanding Search Strategies and Tools

11:55 The Importance of Long-Term Metrics

15:02 The Role of Brand Building in Marketing

17:47 Changing the Conversation: From Cost Savings to Value

21:12 Final Thoughts and Key Takeaways

Chapters

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Transcript

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SPEAKER_00: Welcome to the Sleeping Barber Podcast. When budgets tighten, marketers look for efficiency, cheaper CPMs, cheaper impressions, shorter ads, more targeting, covering a bill. Well, Peter Field argues that CPM is probably the most dangerous marketing metric of them all. We here co-host of the Sleeping Barber Podcast, and in our latest episode, Mark and I discussed our discussion with Peter Field around CPMs and what are they really? We discussed the pitfalls of CPM. We even get into the importance of attention over impressions, and we even discuss strategies for long-term brand growth. While I have

SPEAKER_00: you, feel free to like, comment, share this episode, or feel free to get in touch with us. We're always trying to find ways to make this show better. Now on with the postbod. Welcome to the postbod. Here we are, at least Constantinos Doros. Oh my goodness. Marcus Aurelius Binkleus. I don't know, is that a thing?

SPEAKER_01: Why not? Not really. Somebody used to call me Binklinski because I'm Binklinski. Because I'm Polish, but they're like, that Binkley's not a Polish name. I'm like, that's fine. No, but my grandma my yeah. Grzinski was my mother's maiden name. And they're like, oh Binklinski.