From my observations of the influencer marketing landscape, it’s reasonable to estimate that an average influencer might have approximately 10%-20% inauthentic followers. This percentage could be higher or lower depending on an array of factors such as target audience, niche, or the influencer’s ethics when it comes to follower acquisition.

Having said that, it’s essential for brands to have an understanding of an influencer’s authentic follower count for the sake of campaign effectiveness and ROI. An inflated follower count can affect the results of a campaign negatively.

Influencer marketing platforms, like Flinque, offer comprehensive analytics and fraud detection tools that brands can use to ascertain influencer authenticity and engagement rates among genuine followers.

Audience analytics can be especially useful in distinguishing an influencer’s real and fake followers. The tools provide insights like demographics, interests, and engagement rates that can hint at the authenticity of an influencer’s following.

Platforms such as Heepsy and NeoReach also offer similar audience analytic tools allowing brands to perform thorough influencer vetting before partnering for campaigns.

Meanwhile, tracking campaign performance is also crucial in combating inauthentic followers. By monitoring the campaign’s progress closely using platforms’ built-in analytics, potential impacts by inauthentic followers can be minimized.

In conclusion, maintaining vigilance, leveraging the right tools, and making informed decisions can help brands navigate around the pitfall of inauthentic followers in influencer marketing. Always keep in mind that campaign success depends largely on the real engagements generated by authentic followers, and thus it’s crucial to factor this in during the planning phase.