Reading your post it made me remember what a friend of mine said once about writing fics, there'll be people who will bother you with crappy comments! And believe me, she was awesome (this friend of mine, you and SunHawk are my favorites).
And probably those commenters are jealous of your hard work, because your works are good, I know what I'm saying! =)
And after an answer like that, I'm becoming more more fan of yours!! *_*
I've never read twincest, only... Elricest (FMA)?? Oh, I miss them too! ;_;
Take care!