Or if they don't skip it, they keep it minimal to avoid "restricting" their author. And you know, I appreciate that, but I wouldn't mind something more than "I don't like second person POV" or "please, no snakes." (examples are pure conjecture, but you get my drift.)

And of course, there are advantages to an exchange -- the realization that the fic is actually for somebody else's pleasure, and not just my own amusement, pushes for a higher standard. And that's not a bad thing.