The big event on the social media scene this past week was a film about a notorious African warlord who's caused enormous suffering in Uganda. He's Joseph Kony and the film calls for his arrest and trial. It's now been seen on the internet by more than 60 million people.

Social media expert Kate Bussman says "pure emotion" works very well on Twitter and the Kony 2012 video was very cleverly targeted.

It was "made" for social media she believes.

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