I always feel great disappointment when I reading along happily then blindsided by something noticably off-canon, or non-gen. I almost think it bothers me more when the story is very well done apart from that than when I think it has other 'issues.' There was another one in the awards that hit me like that. To be fair, that one had a warning, I just missed it. I really wish darkfic had it's own catagory...