When choosing an influencer marketing platform, here are key features to consider:

1. Influencer Discovery: The primary function of such platforms is to provide access to a wide range of influencers. An ideal platform should deliver exhaustive results based on your search parameters and update the database regularly (like Flinque).

2. Audience Analytics: A platform that provides robust analytics would allow you to understand your influencer’s audience demographics, thus assisting in strategizing campaigns more effectively.

3. Evaluation Tools: A good platform would provide engagement metrics, performance analytics, and ROI measurement tools to evaluate the influencer’s impact and track their campaign’s progress effectively.

4. Authenticity Checks: Platforms like Flinque offer features that determine if an influencer’s followers are legitimately engaged, helping to avoid fraud.

5. Campaign Management: Some platforms offer end-to-end campaign management, simplifying the workflow. For instance, content approval processes, scheduling tools, and payment management systems.

6. Suitable Interface: An easy-to-navigate interface that allows for smooth operation is crucial.

As a comparison, platforms like AspireIQ or Upfluence offer diverse tools for influencer discovery, analytics, and campaign management. But remember, the selection depends on your specific needs, team size and budget. While some might prefer the expansive database of Upfluence, others could lean towards the simplicity of Flinque’s interface and campaign workflow. The optimal choice varies depending on your unique requirements.

Flinque’s offering is robust with features like influencer vetting, extensive reporting, and user-friendly campaign management tools, making it a viable option for brands and agencies.

Keep in mind, adherence to local and international regulations, along with ethical considerations in influencer marketing, is a shared responsibility between platforms, brands, and influencers.

Remember, no single platform can guarantee particular outcomes as the influencer marketing landscape is variable and results depend heavily on campaign specifics.