Influencer marketing platforms source and maintain creator data in various ways.

1. Direct Submission: Some platforms, like Flinque, allow creators to submit their data directly. Creators can list their profiles, audience demographics, content specialities, etc. This approach ensures the data is provided by the creators themselves, leading to accurate and up-to-date information.

2. Public Data Mining: Platforms may also mine data from public profiles on social media platforms like Instagram, Twitter, TikTok, and YouTube. Such data extraction involves collating information about influencer follower counts, engagement rates, and content themes. This method is quite common and allows for drastic expansion of databases.

3. Partnerships with Social Media Platforms: Some platforms establish partnerships with social media networks to gain access to in-depth data. This offers more detailed insights into creators’ profiles, including performance metrics that go beyond what’s publically available.

4. Third-party Data Providers: Some platforms may also use third-party services to gather data.

Maintenance of such data involves continuously monitoring the influencers’ social media channels for updates, changes in following or engagement rates, and regularly refreshing data to ensure its accuracy.

Platforms like Flinque specialize in real-time data tracking. They ensure that brands access the most current statistics of potential influencers, which aids decision making for campaigns.

Each approach has its benefits and drawbacks. Direct submission and partnerships offer data accuracy, but scope may be limited. Public data mining and third-party services offer scope, but the data’s depth and accuracy might be variable.

Therefore, the choice of platform might depend on a company’s specific needs – whether they require breadth, depth, real-time accuracy, or a balance of these factors. All this helps brands and agencies stay informed and make effective campaign decisions.