It's comical to see how various groups are attempting to use the DMCA,
as well as traditional IP law, against each other, in a vain effort to control
the ideas they call "their" "intellectual property." As Benjamin Franklin said,
when someone else uses your idea, you are not diminished... you still "possess"
it as much as you ever did.

For example, see this humorous(?) dispute between a small web site and someone
claiming to represent Wired Magazine, in which everything from the DMCA,
to copyright and patent law, to the GPL(!), is invoked to assert one side
or the other's IP claims:

http://subintsoc.net/blowback_200203.php#wired2

Just goes to show how asinine these sorts of things can get.