Every once in a while, the issue of how to copyright your artistic work comes up in a blog or forum. When that happens, chances are someone will bring up the neat trick of sending a copy of your work to yourself in a sealed envelope, so that the date stamp proves that you owned the work on that date and that it was created before that.
Here’s what Plagiarism Today has to say on Poor Man’s Copyright:
It is the worst kind of myth. It is wasteful, achieves nothing, gives a false sense of protection and can leave good people more vulnerable than if they had done nothing at all. There is simply no way that poor man’s copyright is a valid strategy for protecting one’s work.
To find out why, read the rest and read the Snopes.com entry on the myth that PT links to.