I got only 23 subscribers from my twitter giveaway, gave 5 of them udemy giveaways. Lesson learned that people don't like much to give their email addresses. Also, decided to built something like dev and also started blogging the code process. I know dev is not a web-app but a massive community of supportive developers. So, will provide developers a way to publish their posts here also, with canonical link back to dev/personal blog. This was the strategy used by dev to move me(and everyone else) to it from medium.
https://nabendu.blog/posts/the-dev-to-project-with-gatsbyjs-1-10d4/