>>14717603It doesn't, not on its own. But having a good sense of pacing in your post does.
Unironically, it's a forgotten fact that good sentence structure, grammatical clarity and a gripping sense of pacing will get more people to read your post and respond in good faith.
It's true of having proper paragraphs, as well. And the best part?
Proper spoiler usage gives the reader a small sense of ownership to the post, that they had to claim it to read it.Images help, too. As do little blurbs at the end of a post to spark discussion after raising a point.