"Most teachers use silencing methods, such as flicking the lights, ringing a call bell (see Teacher Tipster's charming video on the subject), raising two fingers, saying "Attention, class," or using Harry Wong's Give Me 5 -- a command for students to:"

"This step-by-step guide will assist human rights researchers to systematically assess citizen videos that depict potential human rights violations. It integrates best practices of citizen video authentication and brings the myriad of required verification steps into one, linear format."

"The video is compelling, but is it real? If it's real, does this video show a new event? And how can a journalist go about verifying its authenticity? These are questions journalists face everyday as the amount of user-generated content, especially video, continues to proliferate."