I modified a free website theme built on Bootstrap.js to have a receipt OCR demo on the front page. And I launched it on Hackernews. I was scared. I feel like I was being judged. I didn't know whether people are going to love it or hate it. I didn't even have any credit card sign up process. Just a text box to capture email addresses. In the end, I got some traffic to the website, and some questions and comments. But, no real tractions.