I have two conflicting views:
1) I feel it'd be irresponsible for a young kid to be listening to songs like Kill You. I know certain people on this forum have been listening to Em since that age and say it didn't negatively affect them, but I really don't see how it could have any positive impact. I wouldn't give the kid a censored album because I don't believe in censoring music, if an artist said something, they said it for a reason. Even if my kid was a young teen I'd feel weird knowing he's listening to Em's most vulgar stuff.
2) I'd be pissed if my parents had stopped me from listening to Eminem (I started when I was probably 11). I'd hate to do that to my kid. I'd be depriving them of one of the greatest musicians of all time.
I think I'll just ignore it. Don't ask, don't tell. If my kid starts buying XXL Jordan sweat pants and wears a do-rag and kills his girlfriend, we'll have a talk.