Because that is the point of making a video before the suicide instead of just killing yourself.
With that video she knew that a thread in every forum would be at least 30 pages long, that on Facebook there would be at least 20 pages about her and that people would talk about her for weeks instead of just a couple of seconds.
Amanda Todd = mission accomplished
I want this thread to commit suicide....If that makes any sense at all....
"All you lords and ladies, still think that the only thing that matters is gold.
Well this (torturing people) makes me happier than all your gold ever could!
And that makes me happier than all her sapphires,
so go buy yourself a golden hand, and FUCK yourself with it!"