I have mixed feelings about this.  Any news about bitcoins spreading around is good but Al Jazeera has a very bad anti-American reputatation.  They went out of their way to tell the terrorist side of the story in Iraq and as an anonymous currency it isn't a good idea to associate with that kind of thing.  As a libertarian I know drugs should be legal so things like silk road are okay but there should be a way to root out other criminal groups who try and use bitcoin.