Influencer Marketing: Measuring Impact Beyond Clicks
Brands continue to rely on influencer marketing metrics that fail to capture the full commercial impact of creator partnerships as highlighted by System1's Creator Effectiveness Playbook. While clicks, discount codes and engagement are easy to measure, they often don't reflect the complete picture. Supporting this, WARC estimates that 35% of advertising investment is wasted because brands cannot accurately measure what influencer campaigns actually deliver.
Choosing creators based on follower count alone should be a lower priority for brands. What matters more is the influence they have over their audience and the ‘signal’ they send to their community. Two creators can receive the same brief and produce completely different results. Celebrity creators are often better suited to building fame or launching new products, while micro-creators tend to deliver stronger conversions and retention because they've built trust with more engaged communities rather than relying solely on reach.
Charlie Oscar's latest report, Find Your Nerve 2026, also highlights the growing importance of Partnership Ads across Meta, TikTok and YouTube. By boosting creator content that has already proven to perform well organically, brands can extend its reach without losing what made it successful in the first place. According to the report, Partnership Ads generate 125% stronger search synergy than standard advertising and reach 66% net-new audiences. When creator assets are used alongside brand media, video play rates increase by 21% while CPA decreases by 19%.
What this means for us:
This research shows that influencer marketing works best as part of a wider marketing strategy rather than as a standalone channel. Creator activity can strengthen the wider marketing mix, increasing branded search by up to 30% and improving paid media performance by 26%. As a result, brands should look beyond engagement and conversion metrics and consider the broader contribution creator activity makes to brand awareness and overall campaign performance.
When planning influencer campaigns, we should select creators based on the role they need to play, whether that's driving conversions, building awareness or launching a new product, rather than simply choosing those with the largest following. In some cases, investing in a long-term partnership with one trusted creator can be more effective than working with multiple influencers whose audiences overlap or don't align with the brand. Partnerships such as Alix Earle and Poppi demonstrate how creators who genuinely build alongside a brand can deliver stronger, more authentic results than a series of one-off collaborations.
Additionally, many brands lose value by replacing creator-led content with traditional brand creative once paid media begins. Instead, we should repurpose creator content that's already performing well organically through Partnership Ads, allowing us to maximise efficiency and ROI.
As influencer measurement continues to evolve, taking a broader view of creator performance will help brands make smarter investment decisions and better understand the long-term value influencer marketing brings to brand growth, audience engagement and overall marketing effectiveness.