Jigoku Shoujo is about a website called 'The Hotline to Hell', which opens at exactly 0:00, or midnight. There, you may type in the name of the person you hate, and Hell Girl or Jigoku Shoujo will appear and "exact your revenge". Of course, when you pull the string, two graves are dug. One, immediately, for the victim or target, and the second for you. When you die, in return for the Hell Girl's work, your soul will fall into Hell as well.
Now, after this, I quickly "Google'd" Hotline to Hell, and it was midnight, and there it was. Hotline to Hell.
Of course, after watching the show, I couldn't bear to type in someone's name. Scared out of my wits by an anime, weird, I know.
Anyone got the guts to try it after watching this psychologically modifying show?
(And for some reason, it was just a coincidence that I found it at 12:00. ^^)