I think it is one of those people that screams GET OFF MY LAWN!@$!.
I have seen a lot of discussion concerning copyright etc. And from what i know one doesnt have to register to have a copyright or something alike, although its a bit of a gray area from what i have read.
The most basic form of copyright is via the post. You have new material. Send it to yourself via registered post and do not open it. The post has a record of the transaction and in the unopened parcel/letter so do you. But as I said it is a basic form and legal.
Matt