Since heading tags typically make text contained in them larger than normal text on the page, this is a visual cue to users that this text is important and could help them understand something about the type of content underneath the heading text. Multiple heading sizes used in order create a hierarchical structure for your content, making it easier for users to navigate through your document.
5) Post at the right time. Let’s say you want to post in the r/Entrepreneur/ subreddit, but there’s already a post in the #1 spot with 200 upvotes, and it was posted 4 hours ago. If you post at that time, you probably won’t overtake that #1 spot, and you’ll get less traffic. However, if you wait a day, check back, and see that the new #1 spot only has 12-15 upvotes, you’ll have a golden opportunity. It will be much easier for you to hit the #1 spot and get hundreds of upvotes.