While ago, I made a wiki called Jaaszi's Wiki. Then, when I checked on it, somebody I didn't kno who did it, made pictures and articles. They included bad words. I paniced. I never wanted to see that Wiki again. Then another day, I checked on it again and I couldn't find it. I was so glad I couldn't.
Moral: Never ever visit a website if it is hacked or haves bad words.