While you probably get a lot of traffic with HN and reddit it really depends on your product. For example: if you build a managing app for landlords I doubt an

While you probably get a lot of traffic with HN and reddit it really depends on your product. For example: if you build a managing app for landlords I doubt any of the sites you mentioned will bring you paying customers. Maybe some people spread the word about your MVP but I'm not sure if a MVP has enough impact to make people spread the word.