I know my readers are smart enough to know that “the fold” doesn't really matter on the web. But that doesn't mean all of your clients know.
I created a post with links to good resources on the fold in 2013, and I just added this new one by Luke Wroblewski. Luke gives great data and reasoning for why the fold is a myth, and how conversations actually often happen much better below the fold.
Just another link to keep in your back pocket for when you need to explain this concept.