You'd be better off posting this as a Show HN. See https://news.ycombinator.com/showhn.html for an overview and look at https://news.ycombinator.com/show for examples of how people do this. Make the submission link to your site, and add your text as a first comment to the new thread. (Don't make it a text post; those are penalized compared to posts with URLs.) If you have questions, email [email protected]. Good luck!