How to use influencer marketing for startups?

Nice write-up! I've used influencer marketing a bit and what I've found is that their audience size is way less important than how engaged their audience is. I opt for micro influencers who have highly engaged communities. So they may just have just 3,000 followers but their posts regularly are interacted with by 500 or more people. I find that their followers have a much deeper level of trust for their opinion than someone with 100,000 followers whose posts are interacted with by 2,000 people. And that's so important for selling. It's also nice because it's a number you can see fairly easily on your own- even if the influencer is unable to give you stats.