No matter how you feel about YouTube, you will find lots to ponder regarding the impact of user-generated content by reading a recent article  in the Sacramento Bee titled "Media Savvy: Liberal viewer is watching." The article describes the endeavors of "Allen Asch, 41, a stay-at-home dad and a former public defender in Placer County and Missouri" posting as LiberalViewer .
Not only have LiberalViewer's videos been viewed over 800,000 times since July 2006, but also his subscribers already number over 1,500. In addition, his user-comment section "is packed with passionate opinions for and against his points of view."
Why not explore YouTube for additional topical links to recommend to library users—and then even study Asch's approach as one your library might customize for providing information as well.