[dt3ft]

A rewrite is in order with clarifications. The intent is to minimize risk coming from users submitting copyrighted content (entire news articles which are behind a paywall, for example, pages or entire books etc) which could backfire if the organization/site grows. IANAL but this would have to be looked over by a proffessional.

[esperent]

That makes sense, but why don't you let people submit their own content? For example, if someone has a webcomic or a blog, or a photography site, or writes tutorials, or is making an amazing new app... Surely that's exactly the kind of thing that you want. Or at least an important part of it. As it stands it looks like you're saying only other people who find the webcomic (for example) can submit it.