"who owns these words?"

On Fri, Oct 24, 1997 at 03:36:35AM -0400, Anonymous wrote:

I don't think you know who I am, but I wrote this message.

These are "my" words, but "I" am anonymous.

So I am wondering - who owns these words? Who owns the words of an anonymous author,

According to copyright law, the anonymous author, with the exception that the copyright expires 70 years after publication rather than 70 years after the author's death.

who is responsible for the actions of an unknown party, and who is to say that this is so?