Yes, this is already stated in my terms and conditions:
"Tenable [owner of DZFiction] will terminate a user’s access to and use of the Website if, under appropriate circumstances, the user is determined to be a repeat infringer of the copyrights or other intellectual property rights of Tenable or others. "
http://www.dzfiction.com/terms_and_conditions
I'm glad you've got that in your T&C, but why does someone have to be a
repeat offender to get hoisted off your site? Isn't once enough?
We apologise if you feel that our steps are not proactive enough. The management will study other methods of prevention and implement if suitable.
There's no need to apologise, none at all. I dislike plagiarism and plagiarists intensely and prefer sites which don't allow their members any leeway on it; you might not feel the same. If you don't, however, I won't be able to recommend your site to anyone who asks me about it.
My apologies, I had interpreted your question wrongly; I had thought that you were really asking about the operational aspect as in what "allow adaptation" meant. Anyway, the adaptation on my site will comprise translation as well as adaptation from fiction to comics/manga and vice versa. You may wish to see the following page for more information on adaptation:
http://www.dzfiction.com/how_it_works
Thank you.
So the adaptations you allow are translations and reworking into totally different formats. Do the original authors get any say over who is allowed to use their work in this way, or is it just a question of allowing these adaptations and then anyone can have a go?