We decided to take our own advice here. A lot of us read an online article differently than a book. Content that is presented in a list matches the general tendency to scan an article, then read more in-depth if we feel the article is worth reading after scanning it. In contrast, reading a book is more like eating a full meal – bite by bite until we get to the end.
Providing your audience a numbered list makes your content, even if it is a long article, snackable. People can be more interactive with your blog post by being able to pick and choose which topics in your blog post list they want to read more in-depth about and which ones they want to skip all together.