No license/no copyright declaration means no rights in all countries that have signed the Berne Convention (http://en.wikipedia.org/wiki/Berne_convention). This includes the USA since 1989.
"Copyright under the Berne Convention must be automatic" and "Under the Convention, copyrights for creative works are automatically in force upon their creation without being asserted or declared."
You and the other downv^Wredditors read it without considering the context.