Just a comment here: I've seen cases where writers also hit the enter key too many times, and it leaves this nice huge gap which serves no purpose but to make readers use their mouse wheel and scroll through it. I use to do this and not really realize how much of a pain my story was to read until I really looked. Doing it once is okay, like at the end of a chapter to emphasize something, but double/triple spacing paragraphs is too much.
I was probably in the minority with this problem, but hey it does exist. :p