Applying a single attribution model, like last-touch, to all channels is a mistake. It undervalues top-of-funnel activities and can lead to budget cuts that starve the pipeline. Instead, measure each channel based on its intended outcome and funnel stage.

Many marketing teams invest in attribution tools hoping to justify spend, but these platforms can't provide clear answers if the underlying engine is inefficient. You must first diagnose and fix how your leads convert into meetings before attribution data becomes meaningful.

By measuring success on 'last lead source,' the company was incentivized to pour money into paid search for product trials—a clear final touchpoint. This model blinded them to the higher value of other lead types and actively discouraged investment in demand creation activities that build brand and generate higher-quality leads.

Focusing on successful conversions misses the much larger story. Digging into the reasons for the 85% of rejected leads uncovers systemic issues in targeting, messaging, sales process, and data hygiene, offering a far greater opportunity for funnel improvement than simply optimizing wins.

Focusing on a low Cost Per Lead is a common mistake; cheap leads often fail to convert. The more meaningful metric is Customer Acquisition Cost—total marketing spend divided by actual new customers. This shifts focus from lead volume to profitable growth and true campaign effectiveness.

CMO Ben Schechter argues that tracking raw lead count is a dangerous metric. A marketing leader can easily manipulate lead scoring to hit a volume target, flooding sales with low-quality prospects. This erodes sales team trust and causes them to stop following up on all marketing-generated leads.

A common attribution error is assigning all sales to paid marketing activities. In reality, most brands have a strong "baseline"—sales that would occur even without marketing. Accurate measurement requires modeling this baseline first, then attributing only the incremental lift from campaigns.

Focusing on a blended, company-wide conversion rate is a mistake. A flood of low-cost, low-intent traffic might lower the overall rate but still be highly profitable. The key is to isolate and improve conversion for specific, valuable cohorts, like users from a targeted ad campaign.

Standard CRMs typically offer only one field for lead source, which oversimplifies the customer journey. This inherently promotes a last-touch attribution model, ignoring the numerous prior touchpoints like social media ads or direct mail that built awareness and influenced the final conversion.