Youtube's lost innocenceEvery time a new communications platform comes along — the video sharing site, virtual worlds, the internet itself — the tech true believers persuade themselves that the world's been made anew. But, like stubborn legacy code, evil endures: the family of one cocaine trafficker, who was cooperating with the government, received a video death threat over Youtube. The Google video site has been served with a search warrant for records. It's not like this is the first time a new medium has been poisoned: Al-Qaeda, which uses free email services such as Hotmail to disseminate instructions to operatives, has proven more adept in using the web than the US government.