Prenda Law's demand is not for a subset of addresses that might have posted in a manner that could be construed as legally defamatory but for all IP addresses that have accessed these sites irrespective of the use made of them.
Prenda Law have filed three defamation lawsuits already http://fightcopyrighttrolls.com/2013/03/04/copyright-trolls-prenda-law-paul-duffy-and-john-steele-commence-three-lawsuits-v-paul-godfread-alan-cooper-and-our-community/ against the individuals who run fightcopyrighttrolls and one has been dismissed http://fightcopyrighttrolls.files.wordpress.com/2013/03/gov-uscourts-flsd-416314-6-0.pdf
Dietrolldie release the following warning:
“As there is a possibility that a release could occur, the public IP address (date/time stamp) could fall into the hands of Prenda. I would expect that they would then try to cross-reference the IP address with their list of alleged BitTorrent infringement IP addresses,” .
“If you have ever gone to this site or Fightcopyrighttrolls.com since 1 January 2011, you may want to contact WordPress and tell them you want them to refuse this overly broad request and at least wait until the issue of the case being removed to the Federal court is answered, before releasing ANY information,” DTD concludes."
Link to Original Source