Board Thread:Site News and Announcements/@comment-5619531-20140615200844/@comment-10012032-20140616125812

Because someone could actually got confused with the OC category, like your pasta being a spinoff of some pasta, but it's your work nonetheless, you're not sure you would add the OC category or not, and in some articles that actually includes OC, but mentions a character that belongs to other person, you're also not sure you're going to add the OC category or not, that's the reason.