I have realised that I've had this video introduction to the 2010 Edelman Trust Barometer unpublished for a while and hadn't put it live:
The following have all dropped in their trust ratings as sources of credible information: radio, TV and newspapers (probably because of reduced staffing & quality, but also an increase in social media and other digital sources). However, surprisingly to me, is that trust in ‘friends like myself’ has dropped substantially as a credible source of information.