I've built a product for adults. No nudity or porn, just sex-related knowledgebase to save/spice relationships.
And... I'm lost on how to promote it since most of the ads networks should reject this kind of content. So far I just have niche blogs/communities as targets. But looking for any ideas that would help to automate this process.
Teaming up with sex therapists is the first thing that comes to my mind. Though, in the beginning, niche blogs/communities might be the way to go. Even just content marketing on subreddits like r/sex could get you a lot of traffic.