>> "Defendants have published copious volumes of such false statements to many third parties, theoretically extending to every person on Earth through the Internet
I like what you did there - I clicked on the link to read the doc and then slowly realised that my IP now falls within the scope of the requested information.
I found myself reluctant to open the links to FightCopyrightTrolls and DieTrollsDie. Even if there is no consequence to following those links (and smackfu has argued plausibly above that there could be) there is a chilling effect from this demand.
Worse, because they almost certainly will look for some way to sue readers of those sites. On the other hand, it might give you not-so-free front row tickets should they be sanctioned by the judge.
I'm surprised the subpoena doesn't have anything on it that makes it seems like a judge read it. I understand that most subpoenas are just approved by the judge and issued without review, and that the opposition is expected to file a motion-to-quash if they don't like it, but this doesn't even seem to have a signature or anything from a judge.
...really swinging for the fences with this one.