The magical number 7, for text only.
“(…) treating your content like a startup. This is something I’ve always been sure to do, and intend on doing it for my new book too. But that’s a product I intend to sell. Oftentimes we neglect the content that takes care of our marketing goals by confining it to a limited framework. When you treat your content as a product, instead of “just” a piece of content, you give it the attention and worth it deserves. And just like products, the user experience of your content matters just as much as the value you deliver within it.”