If possible, it would be nice to have ability to limit certain bbcodes or tags per post. To install plugin, then set to only allow 5 to 10 or whatever amount you desire for youtube videos and etc to be posted per post.
img = 1 to XX
youtube = 1 to xx
spoiler = 1 to xx
This can help prevent spamming threads of 10 to 50 or more youtube videos, spoilers, images, etc in a thread / post.