Okay, let me try explaining again. If a post you create is less than say 30 characters, no follow will be applied to the post. If its over 30 characters, no follow will not be applied. Does that make sense?
I used 30 characters as example. Its actually 60 characters. Which post are you referring to so that I can double check to ensure the conditional signature hack has not got a mind of its own.
Any thread more than 60 characters should NOT have nofollow.