Of course the 'money' in this is abstracting away the complexities of Open Bazaar with your own app since their example GUI is pretty confounding. For example create a designer clothing app that only lists other designer clothing listings (to not scare away customers who discover a bunch of heroin for sale on OB with the regular GUI), then sell the ranking they appear in your app, or in app ads as a small example.

I don't like the Moderator rating system though, seems too easy to game and has too many worthless stages 1-5. Bitcoin-OTC ratings are more clear. The rating "This is a scam avoid at all costs" opens the door for legal issues of people trying to sue the developers like when Ebay gave up on negative feedback due to too many lawsuits. Of course there is also issues of governments trying to shut down this completely due to weapons and narcotics undoubtedly being sold on OB in the future, I assume the creators have a plan for dealing with that inevitable gov harassment.

The creators/maintainers should also be careful where they travel, if they fly to say, China, Indonesia or Turkey for any reasons they could be arrested there and pushed through a kangaroo court.