> You can see exactly which book series I'm reading, which TV shows I'm watching, what my hobbies are, what my profession is, etc. If you can't figure out how to advertise to Reddit users then I can't help you.

These are very bold claims to make, considering that Reddit is at the bottom of every advertiser's priority list, despite being a lot cheaper.

Have you considered that Reddit users simply do not like being advertised to? Asking for a product recommendation on a message board is fundamentally different from seeing an ad for a product on said board.