With big hair, big riffs and MTV buzz, Germans threaten to go mainstream in US
                                
                                
                                    (Newser) -
                                    Having dominated Europe, German rockers Tokio Hotel are threatening to go mainstream in the US, if the reception their riff-heavy pop metal earned among screaming preteens in San Francisco this week is any indication. "The best way to describe the glam-metal-emo-pop-tween group," Aidin Vaziri writes in the Chronicle,...