Out of interest, what do you class Linkin Park as? I've always seen them as nu-metal (and I do listen to metal music).
Alternative-rock/Hardcore punk/Goth(Original goth music is Electronica) with metal distortion on the guitars. If People consider distortion as the only tool that makes something metal, metal. They are free to believe so if they wish but distortion is only a effect-pedal that distort the sound, metal is only best known for turning the overdrive at max.