Too Long; Didn't Read
ProductHunt is surely one of the places you want to consider for your project or startup. Make sure to launch your project just after midnight San Francisco time to get maximum exposure. Don't ask for upvotes, it's against the rules and you just annoy people. You need to be responsive and engage with the community. You can hint on it by saying "Thanks for checking it out and your support!". Don't spam everyone you know with your ProductHunt link. Post it and mention you appreciate support - that's plenty already.