He that Filches From Me My Good Name
Danny O'Brien has an interesting meditation on the difference between controlling who copies something, and controlling who claims to have created it. Cory Doctorow makes an illuminating observation on the same:
I'm reminded of the fact that the original Creative Commons license allowed creators to choose whether they wanted their works attributed to them or not, but after a year or two, it was discovered that nearly every CC user turned the attribution switch on while generating the license -- everyone wanted correct attribution, even when they were giving away free copies.
It's reputation that counts.