Hey guys!
Yeah, I can say that Reddit is really useful as a marketing channel, especially when you are in the early stage. It's an untapped channel, and not a lot of people are able to 'hack it'. Positing is one way of promoting your business on Reddit, but please keep in mind that self-promotion is strictly prohibited on Reddit, and you can get your post removed and account banned for doing it (been there, done that).
We have found that direct outreach on Reddit is a really great tactic, and it produces response rates unlike any other marketing channels (our Growth Specialist gets 60%+ response rate on most of his campaigns).