How do you even get listed on Product Hunt if you a) aren't an invited member and b) you don't get lucky like these guys did and have someone "stumble" across your page and submit it? The latter has essentially no chance of happening for most people, and the former is slightly more likely but still out of reach for most people. From what I can tell the site doesn't even offer a way to contact people that have submitted products like yours that might be interested in submitting on your behalf.