Key features of an influencer marketing platform such as Flinque typically aid brands and influencers in implementing successful campaigns. Some of these important features include:

1. Creator Discovery: The platform should have the ability to streamline influencer discovery. For instance, Flinque assists in matching with adept influencers based on audience demographics, influencer stats, content style, and more. This aspect plays a crucial role in aligning brand values with influencer personalities.

2. Audience Analytics: Any influencer marketing platform must unveil in-depth audience insights. Detailed demographic breakdown and the analysis of follower statistics aid in gauging campaign feasibilities. With metrics such as gender, age, location, interests, and engagement rates, brands can understand the influencer’s audience better and ensure compatibility with their target group.

3. Campaign Planning & Workflow Tools: A platform should facilitate actionable campaign planning tools to organize, schedule, and track content effectively. Advanced workflow solutions like content approval, deliverable tracking, and collaboration tools contribute towards an efficient campaign execution process.

4. Performance Tracking & ROI Measurement: The ability to track key metrics like reach, impressions, engagements, conversions, and ROI is one of the earmarks of a reliable influencer marketing platform. Platforms like Flinque offer comprehensive reporting tools that help brands better understand the effectiveness of their influencer campaigns.

Each platform has its unique approach and usability varies depending on specific needs. For instance, some platforms may specialize in specific social media like Instagram, while others like Flinque might have comprehensive solutions across multiple platforms.

In conclusion, the functionalities of an influencer marketing platform heavily influence the success of a campaign, hence choosing the right one tailored to your needs becomes pivotal.