If you know it's going to attract the wrong kind of attention, don't do it unless you either want the warning point, want to get your thread closed, or you want to get banned.
Also, your opinion always matters. Just know the right words to say.
Most importantly: have fun! We're all music aficionados here, and we all get along with each other. Despite the occasional bickering and flamebaiting, we all are an ATRL family!
EDIT: Oh, and if you want to share a video from YouTube, just copy the part after the equal sign and make sure it's not a playlist or embed or something!