U2 manager Paul McGuinness has made another high-profile intervention into the debate around digital music and industry innovation, writing a column on 'How To Save The Music Industry' for GQ. After attacking bloggers – “anonymous gremlins who wait to send off their next salvo of bilious four-letter abuse whenever a well-known artist sticks their head above the parapet” – and praises subscription models from Spotify and Sky Songs. “These surely point the way to the future where music is bundled or streamed and paid for by usage rather than by units sold.”And he calls for more help from the technology industry. “If the engineers who built the iPhone, the geniuses who made Google reach every home in the world in less than a decade and the amazing talents behind Facebook were to apply themselves to our problems and help, what a wonderful world it would be.”