Public Domain Superheroes?

SerpicoWasTaken writes "Here is an interesting article about a group of comic book heroes from the golden age that are in the public domain. Apparently, a bunch of golden age heroes were never copyrighted and just faded into obscurity. The article also contains a long discussion of copyright and the public domain. It is an interesting read for all those interested in the public domain." Update: 09/25 17:51 GMT by M : Link removed at the request of the site maintainers because it's killing their server. Update: 09/25 19:02 GMT by M : They've put the document on a static page instead of a cgi script. :)