At the beginning of this year, I decided at Boot.dev that we needed to take Y Combinator's advice and build something that "A few people LOVE" instead of something that "a lot of people LIKE".
The idea is that if you have something a few people love, it's easier to go find more of those people, and since they love it, you'll have an easier time growing your userbase. If you have something that a lot of people just like, it won't grow via word of mouth, and you might even have a hard time getting those users to pay for it.
Anyhow, I think we've finally hit the milestone of "10 superusers", and we're now seeing the benefits. You can see who they are at the bottom of our leaderboard
The nice thing about having people that really love your product, even if its not a ton of people is that:
We're going to continue to "niche down" and focus on our superusers. What's similar about them? How can we find more people like them? etc.