(4 points, 10 for severe violations) :
Members may not request or provide help to illegally view copyrighted content, and may not in any way admit to using ROMs. YouTube and similar links are allowed, except YouTube links to full pokémon episodes or movies (in part or whole). Mentioning fan translation in general is permitted, but not specific translation groups or projects. Finally, when putting someone else's fanworks in your forum or blog post, you should at least note that it is not yours and if possible credit the creator.
Posting direct links to full episodes, games or chapters, and presenting other people's fanwork as yours, is a severe violation, barring exceptional circumstances.
(SEVERAL forums have specific rules regarding YouTube link and crediting fanart, be sure to check!)
But for some ROMs they're not rips of games. What if I programmed my own ROM and wanted to discuss it?
Let's not try to deliberately find holes in the rules. The rules say ROMs and doesn't separate commercial game rips from homebrew ROMs, so all discussion of them is banned. We couldn't ensure such a ROM would be your own creation anyway.