What's with Limewire and "dirty stuff"?

Everytime I search for music or videos or whatever, theres always something that says "" or "get's fckked hard". There's so many of them. One time I was looking for a snowwhite clip on the videos section and there was this one that said snowwhite-not for kids. I didn't think it was going to be XXX since the files usually say *o* before you download them to let you know ahead of time. I thought it was suppose to be like a parody or something. Then I downloaded it and it opened in my windows media player and it showed the seven dwarfs with huge c*cks screwing snowwhite. I was like "wtf ugggh!" Why does Limewire have so much on it???