Edited by author 11-15-2005 09:53 AM
Although an opt-out is good I think COCOA would help strengthen it more.
Also a great example of this:
http://www.archive.org/

I hope archive.org has an opt-out because I really don't want some of my old stuff up there, that I chose to delete.

In the U.S. I think it's: If I throw it up on the web and it's dated it's auto-copyrighted, but that's only related to my own jurisdiction so really more useless i think. I dunno.