I might pay $5 for an app that would be sort of my wikipedia on etiquette, but I don't know how you could monetize this as a service - much of the information i

I might pay $5 for an app that would be sort of my wikipedia on etiquette, but I don't know how you could monetize this as a service - much of the information is available for free online, so it would have to have a strong value-add.