Don't forget to address the whole native advertisement issue, its exploded in recent years and has been destroying online communities.

Good point, I appreciate your feedback.

I wonder if fixing the rest of online advertising would suffocate this technique. If, by adhering to these three laws, we gradually develop a vastly superior way to connect sellers with buyers, then destructive methods like native advertising (and I'm sure there's more) might be much less appealing to sellers.

No joke: you should try to get a TedX talk and inform the world on this subject. I think it's golden.

Thanks, I appreciate your kind words. Perhaps one day I, or someone else who runs with these laws, will be credible enough for a talk like that. Right now I'm focused on developing software to let us abide by Law 1.

This is great!