You post something to a discussion list. I quote your message in my response. Have I acted illegally?
Probably not, though your message is copyrighted, and I copied it. Your posting the message to a discussion list almost certainly gives others an "implied license" to quote it. When a copyright owner acts in such a way that *reasonable people would assume that he's allowing them to make copies*, the law interprets his conduct as creating an "implied license."
A familiar non-cyber example is a letter to the editor. If I send the letter to the newspaper that starts with "Dear Mr. Editor,"a reasonable person would assume that I'm allowing them to publish. This is so because this is a *customary practice*, and because almost everyone knows about this custom. So when the newspaper publishes the letter, they'll be protected by the implied license.
A few more examples:
If my letter to the newspaper starts with "Dear Editor: Don't publish this," then I'm not giving the newspaper any sort of license. Similarly, if my e-mail to a discussion group clearly says "Don't forward this to any other group," readers won't have an implied license to forward it. If I were the lawyer for a newspaper that didn't want its stories copied from its Web page, I'd tell them to put up a prominent notice about this.
One more important point: An implied license can only be granted by the COPYRIGHT OWNER. If I post someone else's software (or even someone else's newspaper article) to a bulletin board, this doesn't give anyone the implied license to do anything with it.
authors
Larry Lessig | David Post | Eugene Volokh |
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