Rule Reddit

Reddit is a hugely popular site with tons of traffic and that makes it exceedingly easy to reach a very targeted audience. Any given Subreddit will provide access to only those who are interested in that subject meaning that you can very easily reach people who are interested in your niche/industry.

There are subreddits to cater to almost every possible interest and hundreds that are set up as jokes, as alternative communities to cater to subgroups of established groups and much more. In other words, no matter what your niche or product is there's probably a place where you can find your exact audience on Reddit.