Founder of https://agentset.ai here. We found lots of success posting on the r/RAG subreddit. We've been working with RAG for sometime so have enough experience to answer other people's questions and establish credibility by dropping our link.
What we are currently doing: 1) Cold outreach to power users - to convert them into affiliates. 2) Cold outreach to individuals who have target ICP communities. 3) SEO for more long term (not for the first 500)