afaik
copyright is automatic, and certainly for written work, a good way to assert is is by posting yourself a copy of your stuff by recorded mail, and leaving the letter unopened. that way, in the event of a fture isse, you have dated evidence that you created the piece

not sure how helpful that is having read the above replies, which look far more comprehensive
( mictoboy shitting in your cunt since, Tue 28 Jul 2009, 9:56, 1 reply, 17 years ago)

Posting to yourself contributes absolutely nothing toward copyrighting.
www.copyrightauthority.com/poor-mans-copyright/
( Noeli overtheshoulderboulderholderthingstraplatchboobs, Tue 28 Jul 2009, 9:58, Reply)

fair do's

( mictoboy shitting in your cunt since, Tue 28 Jul 2009, 13:08, Reply)