Torrent hosters have responded with sarcasm, profanity and a great deal of humor. Ars Technica has rounded up many of the best responses. These are fine reading.
This e-mail serves as a counter notification under USC Title 17 Section 512 (c)(3)(A)(iii) that you have failed to properly identifying links to content that allegedly infringes your copyright/trademark/rights (or, in this case, has something to do with really embarrassing trade secrets *and* employee social security numbers) AND you have failed to address your e-mail to the appropriate agent, namely email@example.com, so I invite you and your clients to take a long walk off a short pier, since you and/or your clients might actually manage to NOT get something that simple wrong... Despite us being located in Canada, if you do actually figure out how to compose a valid DMCA notice, we will honor it, just as soon as we're done laughing at you.
Dearest little asstunnels, Let me start off by thanking you for your pitiful attempt to have your e-mails removed from the entire internet... In case you haven't noticed, this site is located in Europe (I hope you can point it out on a map) where your stupid copyright claims have no base. But fair is fair you guys did suffer over the past week so here's bit of advice to you guys: F*** you! F*** you again! F*** you again and again and again!Link (Thanks, Erik!)
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.