Remember, the developers and publishers of the game, and the player community at large, are not responsible for protecting your children from material that you might prefer they not be exposed to. The main intent of this article is to equip responsible parents with the knowledge and techniques to ascertain whether your children might be using any game mods that you might object to. (X-rated content is possible and widely used in The Sims community)
Most of these modifications fit the 'T for Teen' ESRB rating of the game, but some mods are more R- or M-rated. If you are a parent of an underage teen player of The Sims 3, you should be aware that the player community has developed many modifications to the game that are easy to find by anyone who can use Google to search the web.