For years, the default way to evaluate a creator was follower count. It was easy to measure and easy to put in a slide deck, and it told you almost nothing about whether a campaign would actually sell product.
A better approach, in our view, is to look at a small set of signals that say more about whether a campaign will sell:
Audience overlap, not audience size
A creator with 40,000 followers who genuinely overlaps with your buyer (same city tier, same price sensitivity, same category interest) will often outperform a creator with 400,000 followers and a generic audience. The question isn’t “how many people will see this,” it’s “how many of the right people will see this.”
Engagement quality, not engagement rate
Engagement rate alone is easy to inflate. What matters more is the kind of engagement: are people asking where to buy, tagging friends, saving the post? Comment sentiment and save rate are better leading indicators of purchase intent than a raw percentage.
Attribution at the campaign level, not the post level
Chasing last-click attribution on a single Instagram Reel is mostly a losing game. A more reliable approach is tracking campaign-level lift (coupon code usage, branded search volume, and direct traffic in the days after a wave of content goes live) rather than trying to attribute revenue to one post in isolation.
None of this is about picking bigger creators or fancier metrics dashboards. It’s about being honest that the old proxy, reach, was never the thing you were actually trying to buy. What you’re buying is trust with a specific audience. That’s measurable. It just isn’t measured in followers.
FAQ
Is follower count useless? No, it still sets a ceiling on reach. It just says little about whether those followers resemble your buyers.
How do I verify audience fit before paying? Check audience location, language and comment quality first. Our guide to finding Instagram influencers in India walks through it, and how GetCollab works shows how we shortlist creators.