You checked engagement rates. So why isn't it selling?

Few people look only at follower counts anymore. Checking engagement rate, views, saves, and shares has become standard practice. Even so, you've probably picked an influencer whose numbers looked great, only to watch sales stay flat. The issue isn't whether you look at engagement. It's that some things can't be known just from the fact that engagement is high.

Strong engagement doesn't mean your product will sell

Engagement rate is clearly a better metric than follower count. In fact, engagement drops as accounts grow. On Instagram, nano-influencers (under 10K followers) see 3.5–8%, while mega-influencers (1M+) sit around 0.5–2%, and nano- and micro-influencers also convert two to three times better. That's why brands now choose based on engagement rather than size.

But one more step is needed. Engagement rate tells you whether someone's content is entertaining. It doesn't tell you whether that engagement comes from people who would buy your product. A comment on a funny, well-made video and a comment from someone who actually needs your product each count as one.

On top of that, sometimes the engagement itself is hard to trust. Research estimates that a large share of influencer followers are fake or suspicious accounts, and most marketers say they've run into influencer-related fraud in the past year. In Korea, there has even been a case of an agency that was sanctioned for mobilizing influencers at scale to post undisclosed paid promotions.

A hit for another brand isn't a hit for yours

This is the more important point. Just because a creator delivered strong results for another brand doesn't mean your product will see the same. Those results happened because that creator's audience was interested in that category. When the audience and the product don't line up, conversions won't move no matter how high the engagement rate is.

That's why the industry's selection criteria have changed. Many brands now look at audience fit and the creator's reputation before follower count. Consumers feel the same way. The quality they most want in an influencer isn't glamour. It's whether the influencer shares their values.

Sincerity shows—and it shows up in the numbers

88% of consumers say it matters whether an influencer is genuinely interested in the products they recommend, and 64% say an authentic review led them to make a purchase. Studies also show that content from creators who actually use a product and talk about it gets more engagement and more conversions than polished, scripted ads.

On the flip side, when a post is obviously sponsored but lacks sincerity, it actually erodes trust. Consumers don't object to sponsorship itself. They expect even sponsored content to feel real. In short, the question isn't “Is it an ad?” but “Is it real?”

From one-off promotions to building something together

A sponsored post that goes up once ends with that moment's exposure. Keep working with the same creator, though, and trust builds up. To their audience, your brand stops being “an ad I scrolled past” and becomes “something this person keeps using.” Go a step further and bring the creator in from the product development stage, and they become a partner rather than a promotional channel. Because they genuinely have something to say, the content gets richer too.

In the end, it comes down to knowing people

Finding good creators doesn't end with sorting numbers on a dashboard. You need to actually meet them and learn what they care about, which offers they turn down, and how they talk with their audience. Most creators say they turn down brand offers that aren't a good fit, and those are exactly the people who make good partners. This network also isn't something you build once and leave alone. It stays alive only if you keep discovering new people and updating it.

Dongle Media Lab built this network by working directly with creators on live commerce shows. Instead of ranking people by follower count, we look for the ones who fit the brand and product, and turn that into an ongoing relationship. If influencer marketing hasn't delivered what you expected, the place to start over may not be the creative or the budget, but who you work with and how.