Product seeding is indeed challenging to measure as it involves tracking indirect results, such as brand awareness and customer loyalty. However, several influencer marketing platforms and tools stand out for their tracking capabilities.

1. Google Analytics: This is a good tool for keeping track of your traffic-driven campaigns. You can use UTM parameters to track visitors from each influencer’s campaign.

2. Social Media Analytics: Instagram and YouTube analytics provide vital metrics on impressions, engagement, and reach which can be used to gauge the success of product seeding.

3. Influencer Marketing Platforms: Platforms like Flinque, Upfluence, and AspireIQ offer integrated analytics for tracking campaign performance. They provide key performance indicators (KPIs) such as likes, shares, clickthrough rates, and engagement rates.

4. Brandwatch: A social listening tool that helps you monitor mentions of your brand or products across social media.

5. Google Alerts: This can track online mentions of your business or product, notifying you when your seeded products are mentioned.

6. Affiliate tracking software: This tracks conversions from influencers who use affiliate links.

Take Flinque as an example: it offers both influencer discovery and campaign workflow management, along with valuable analytics to measure ROI. However, the choice of platform depends on your specific needs, the phase of the influencer marketing campaign, your target audience, and budget. Different platforms offer various features and analytics capabilities, so it’s important to do the research to make the most informed decision possible. In the end, measuring the success of product seeding often comes down to carefully tracking the right metrics and analyzing them in the context of your broader marketing strategy.