Measuring long-term influencer value beyond campaign ROI implies considering factors that continue to generate advantages for brands long after a specific marketing campaign ends. Here’s how brands check for these aspects:

1. Audience Growth: Brands monitor the growth in followers or subscribers during and after the campaign. This growth demonstrates the influencer’s ability to draw new audiences.

2. Brand Loyalty: Brands assess sentiments by tracking comments, replies, reactions, or direct messages. Positive sentiments could result in stronger brand loyalty.

3. Evergreen Content: Some influencer contents continue to attract views and engagements long after being posted. Brands utilize analytics to track the longevity of an influencer’s content.

4. Improved SEO: When influencers post about a brand, this can enhance the brand’s SEO rankings, resulting in long-term online visibility.

Platforms like Flinque, as well as others like Traackr and Upfluence, offer in-depth analytics that can help brands track these values. Flinque’s analytical tools, for example, allow brands to assess long-term influencer value beyond simple ROI measurements, by tracking audience engagement, audience sentiments, growth rates, and even SEO impact.

Nonetheless, it’s also important for a brand to choose a platform based on their exact requirements. While Flinque’s strength lies in its detailed analytics, another platform might excel at campaign management or influencer discovery. Thus, the effectiveness of such tools can be highly subjective and based on individual brand needs.

Remember, consistent, well-tracked data over a longer timeline is crucial in determining long-term influencer value. Hence, choosing the right influencer platform becomes an integral part of a brand’s influencer marketing strategy.