Hackers 4, YouTube 0

The hackers are managing to keep ahead of YouTube, despite its attempts to block visitors from downloading videos to their hard drives. (Why YouTube should want to block the downloads, I can't fathom. It presumably can't be to protect advertising, because the pages containing the videos don't carry advertising. And it can't be to protect copyright, because YouTube doesn't own the copyright anyway.) Anyway, I noticed yesterday that my previous incarnation of the Firefox extension DownloadHelper was no longer working. Mild panic, until I downloaded the latest version, 4.3, and all is back in action again. When will YouTube wake up that this is a futile battle it can't win.