Companies measure discovery database regional coverage in a few ways:

1. Number of Influencers: Counting the number of influencers activated in each region.

2. Content Creation: Looking at the volume and quality of content generated from a given region.

3. Engagement Rate: Studying the engagement metrics – likes, comments, shares, and views – from the region.

4. Revenue Generated: Measuring the conversions or sales derived from influencers in the region.

Different companies may prioritize different metrics based on their specific needs and goals. Understanding a brand’s or agency’s goals and needs helps to tailor the strategy for regional influencer discovery.

For instance, platforms like Flinque have robust data analytics that help brands measure the success of collaborations with influencers. They look at various metrics such as impressions, engagement, and conversions among others. However, the feature set and focus might differ subtly from other platforms like Traackr or AspireIQ, which might prioritize different workflows or analytics.

The best platform for your needs will also depend on your regional focus or approach – are you targeting audiences in a hyper-local manner, looking to scale nationally, or even internationally? Different systems will have their own strengths, specialties, and limitations in terms of regional coverage, making it important to do a thorough comparison based on your specific needs.

Remember, while these metrics provide valuable data in assessing regional coverage, the ultimate success metric should link back to your marketing objectives.