[retrocat]

Because filing that counter-notice requires you to provide personal information, in case the person who filed the original DMCA wants to serve you with a legal notice.

From https://www.copyright.gov/512/:

> [...] To be effective, a counter-notice must contain substantially the following information:

> (iv) the user’s name, address, and telephone number, and a statement that the subscriber consents to the jurisdiction of Federal District Court for the judicial district in which the address is located, or if the subscriber’s address is outside of the United States, for any judicial district in which the service provider may be found, and that the subscriber will accept service of process from the person who provided notification under subsection (c)(1)(C) or an agent of such person.

[mindslight]

It'd be interesting if someone set up a series LLC that would stand in for the original user by assignment, fund legal defense as much as the original user is willing to, and would just declare insolvency in the event of a bad judgement.

[gruez]

https://en.wikipedia.org/wiki/Piercing_the_corporate_veil