2016 copyright dating
This is a matter of some debate, but even if the former is true (and in this writer's opinion we should all pray it isn't true) it simply would suggest posters are implicitly granting permissions "for the sort of copying one might expect when one posts to Usenet" and in no case is this a placement of material into the public domain. Furthermore it is very difficult for an implicit licence to supersede an explicitly stated licence that the copier was aware of.It is important to remember that when it comes to the law, computers never make copies, only human beings make copies. Note that all this assumes the poster had the right to post the item in the first place.See EFF notes on fair use and links from it for a detailed answer, but bear the following in mind: The "fair use" exemption to (U.S.) copyright law was created to allow things such as commentary, parody, news reporting, research and education about copyrighted works without the permission of the author.For example, in the USA, almost everything created privately and originally after April 1, 1989 is copyrighted and protected whether it has a notice or not.The default you should assume for other people's works is that they are copyrighted and may not be copied unless you know otherwise.
There have been cases that go beyond the bounds of what I say above, but in general they don't apply to the typical net misclaim of fair use.You may be thinking of trade marks, which apply to names, and can be weakened or lost if not defended.You generally trademark terms by using them to refer to your brand of a generic type of product or service. Delta Airlines "owns" that word applied to air travel, even though it is also an ordinary word. (This case is fairly unusual as both are travel companies.Fair use determinations (see below) do sometimes depend on the involvement of money.Some argue that posting to Usenet implicitly grants permission to everybody to copy the posting within fairly wide bounds, and others feel that Usenet is an automatic store and forward network where all the thousands of copies made are done at the command (rather than the consent) of the poster.
- by Brad Templeton Note that this is an essay about copyright myths.