I meant in the context that if an author uploads a page to your site, they'll need to declare that they've done so to any publishers they approach. Standard co

I meant in the context that if an author uploads a page to your site, they'll need to declare that they've done so to any publishers they approach. Standard contracts in publishing often tend to say something along the lines of "the author confirms that no part of this manuscript has been previously been made available to members of the public", presumably if a page has been uploaded to your site they may not be able to make such a declaration.