I haven't heard of this case before, but it sounds like a newspapper figured out who the anonymous blogger was and the blogger sued to keep them from publishing his name. This isn't like the court is forcing him to reveal himself (which is what I first thought), the court is just saying that if you want to remain anonymous, don't leave enough clues for someone to track you down.
That was my take as well. This is slightly less alarming, especially considering that looking at it from the other side of the coin, the court upheld the freedom of the press to report what it finds.
Yeah, the title should be changed to "kills one blogger's anonymity," not "blogger anonymity",
This is the same Justice Eady who ruled against Simon Singh [1] and in favour of Max Mosley [2].