I'm using this untapped source for leads/potential customers and i'm surprised not many people know about it . It is the top 5 most visited site after all (reddit). It is the most direct way to target people who are having the problem your solution is solving. Rather than going on LinkedIn and just messaging CEOs/Directors at companies you think might need your solution, why not find people who are posting that they are having the problem.
So would you pay for a tool that helps you discover and message these potential customers that are posting about the problem you are trying to solve on niche subreddits?