U2ís manager Paul McGuinness has voiced his thoughts on the arrival of ad-driven online radio services exemplified by Spotify. While McGuinness was supportive of the concept, and can see it as a viable make-up of the way that music is distributed in the future, he still has serious reservations about it. The main problem, according to McGuiness, is that Spotify and the labels have not been transparent enough about the money generated by the services, and this has resulted in artist mistrust.