If it is that special and unique that it can't be found anywhere else, which is seldom the case but does come up, just pm a mod concerning this, or put a note in the post. If it is indeed that uniqe of a situation the link will be allowed, as has happened in the past. Often when there is a link that is not obviously contrary to the rules, such as this one, it will be discussed among the mods, as this one was. That is why when the link was questioned 6 days ago, and removed today. So don't worry if you, or any other member does come up with a totally unique situation, as the rules do have some flexability, and the moderating team is reasonable.