I've got a few friends like that. Mostly family, actually. I'm purposefully not mentioning the server, because I'm 99% sure that they will spread the word among people in my (and their) age group, that are neither mature nor a good fit for the server. (Themselves included).
Those are exactly my thoughts in regards to the friends I was referring to. Although it isn't like they're immature, they just wouldn't fit in with this kind of community.