I'm really fucking sick of having my art up on e621. If whoever did it asked my permission I wouldn't mind as much, but otherwise, I don't fucking want it there. I, as the one who put time and effort into creating these pieces, want to know what happens to my art, and reposting it without my permission is rude and disrespectful. If you have done that with my art, you can absolutely go fuck yourself.
Link
giza
They have a DNP list: https://e621.net/wiki/show?title=avoid_posting Maybe you could ask to be added to it?