This question refers to doujinshi. And I'm specifically asking about original doujinshis. I know that there is tag for "original" under M, N, O ... but I'd still like to know where it is most advised to post self published original works as I've seen people posting them all over.
Mentaiko works would probably be the best example for why I'm confused around this. You can find his works in Oneshot sections, tagged as original in Doujinshi section, in Manga section, and even has its own tag in Doujinshi section.
And with that even some doubles are posted.
I know that in English speaking world doujinshi is strongly associated with parodies based on existing work so it's not like i don't understand why people are posting such works all around. But I'd still like to know where does the forums policy stand in such case.