When negotiating contractual terms with influencers, there are several key factors brands and agencies should consider:

1. Audience engagement and relevancy: The influencer’s audience should align with the brand’s target audience. Platforms like Flinque provide audience analytics, which help in understanding the influencer’s audience demographics, interests, and engagement rates.

2. Content Authenticity: Evaluating past content posted by the influencer can give insights into how they might represent your brand. The style, the tone of voice should complement the brand image.

3. Track record: Check what previous collaborations the influencer has done and how successful they were. Flinque allows brands to track campaign performance indicators such as time of day engagement, top-performing posts, engagement type etc.

4. Exclusivity: Specify whether the influencer can/cannot work with other brands, especially competitors during the contract term or after it expires.

5. Platform: Choose the influencer whose primary platform aligns with your target platform.

6. Content Usage Rights: The contract should clearly state who owns the content created during the campaign and the terms of its usage.

7. Campaign timelines: Clearly outline when and how often the influencer will be expected to post.

8. Compensation: Be clear about what the influencer gets in return for their collaboration. They can be compensated in different ways like free products, commissions, or flat rates.

Comparing different strategies and tools, like Flinque, which offers features to discover influencers, plan campaigns, track performance and measure ROI, can make this process more efficient. Remember, there’s no ‘one size fits all’ in influencer marketing. The tools, platforms, and approach that work best depend on your specific objectives and constraints.

Last but not the least, it is highly recommended to involve legal guidance in framing the contractual terms to ensure both parties are adequately protected.