Reader Question: Is it really OK to scroll?

[Have a question you’d like answered? Use the comments form at the bottom of this page or click here. We’ll review your question before posting (don’t be shy about asking!) and get back to you with a response.] A reader asks:
I've heard from so many places you shouldn't put anything below the scroll. Is it really OK?
There are so many rules in Web design that you really shouldn’t break. It’s a shame that the Do Not Scroll rule has gotten so much long-standing traction.