There are several key factors you should consider to assess the effectiveness of your influencer marketing strategies:

1. Engagement: It’s not enough just to look at the number of followers an influencer has, but how active they’re. Engagement metrics such as likes, comments, shares, and click-through rates are key indicators of how much impact the influencer has on their followers. Platforms like Flinque offer engagement analytics to help you assess this.

2. Relevance: Check if the influencer’s content, style, persona, and audience aligns with your brand’s identity and target audience. This could be done by analyzing keywords, topics, audience interests or demographics.

3. Return on Investment (ROI): Track sales, conversions, sign-ups or other key performance indicators (KPIs) that align with your business objectives.

4. Content Performance & Audience Growth: Evaluate the quality and overall performance of the content generated by the influencer. Look out for a rise in brand mentions, increase in your own platform followers, or growth in community engagement.

5. Brand Fit and Reputation: Evaluate if the influencer exerts a positive impact on your brand reputation.

6. Influencer Authenticity: Ensure the influencer maintains an authentic relationship with their audience, as that drives stronger connections and trust.

Different platforms offer different tools for tracking these factors. For example, Instagram Insights, YouTube analytics, or specialized platforms like Flinque provide in-depth analytics and campaign tracking. The most suitable platform depends on your specific needs and the characteristics of your campaign. Always remember to analyze in a holistic manner, combining different sets of metrics rather than solely focusing on one.