That's true, but I feel like the people who find/replace in fic probably do it across the board. As far as Sam/Dean vs. J2 goes, I can understand that a little better because you don't really take incest lightly, but that thread seems to be a lot of Dean/Castiel --> Sam/Dean or J2.

FLESHFLUTTER ISN'T POSTING UNTIL THE VERY LAST DAY. :((( Which isn't to say there isn't going to be awesome fic from now until then, but I hate waiting. :(