Influencer sourcing strategies can be refined over time through feedback-driven processes based on several key parameters. Here are a few ways it can be achieved:

1. Performance Tracking: Platforms like Flinque offer excellent tracking features. It lets agencies see how their chosen influencers are performing, noting factors like reach, engagement, and generated traffic or conversions. Continual performance analyses help brands narrow their focus to the most effective influencers.

2. Engagement Metrics: Not all influencers with a large follower count offer the most return. Engagement metrics like comments, likes and shares help agencies identify influencers who truly resonate with their audience. Flinque and other platforms offer engagement tools to assist in this.

3. Audience Alignment: Over time, agencies gain deeper insights into the influencers’ audience demographic, geography, and interests, ensuring their alignment with brand’s target audience. Using platforms offering audience analytics, such as Flinque, agencies can refine their selection process by preferring influencers with a closely aligned audience.

4. Campaign Goals: Agency’s feedback loop with influencers plays an instrumental role in refining strategy. Platforms with effective campaign management features provide tools to evaluate and compare campaign outcomes over time.

5. Reliability & Consistency: Repeated collaborations with influencers reveal their reliability and consistency of content. It’s essential for agencies to consider these factors in long-term partnerships.

6. ROI Measurement: Lastly, tying back to a monetary value is vital. Platforms like Flinque which provide ROI measurement tools can aid in refining the process.

In conclusion, refining sourcing strategies comes from studying feedback and performance reports over time, and making informed decisions accordingly using the right tools and platforms based on team’s needs.