1)The resulting hybrid of proper old metal bands and contempory talentless losers. The ability to sing or play instruments well is not considered to be an important issue, so long as the frontman (usually a man) can scream loudly and wear halloween masks on stage (most likey as they are ashamed to show their faces because they know their 'music' stinks). The bands themselves are also aware that they lack lyrical talent, and so scream inaudiable words in the hope that no one actually hears their pretentious ramblings regarding suicide and hating the world.
2)Such bands tend to attract an array of 'rebellious' youth, aging between 8 and 15. However, Nu Metal can also be listened to by older people, who sadly failed to outgrow it. Nu Metal tends to be a phase in a person's life that will come to an abrupt end, when it is discovered that ones parents are no longer shocked by its irratingly pretentious content, and/or it is no longer considered 'cool' amongst ones peers.
NU METAL BAND: "FUCK YOU, I'LL FUCKING KILL YOU ALL! SLIT MY WRISTS AND THEN SLIT YOUR FUCKING THROAT NEXT! I FUCKING HATE THE WORLD!! *screams*