In this case, I came across a fic where the writer had a character that was a child, and this child's dialogue was written in (get this) all lower case. No capital letters. At all.

Because a child doesn't know how to capitalize? So then the dialog should also have typos, right? Or perhaps represented only as "------" because the child is too short to reach the computer keys. w00t! stylistic flourish!

*head desk*