Freeware is what the name implies... Totally free, no strings attached. Shareware comes in two main flavors that I have seen:
Able to use the program with a message of guilt everytime you start the program or a full usage of the trial with a certain expiration time.
For me, the basic idea of fair use basically means I can use something that hasn't been directly prohibited if it's use will be for a educational purpose. For example, I think I can use NBA's logo for a school project if I say I like basketball. While looking on the internet, I found a site that covers the details very well. I also learned about why it is okay for a teacher to copy off a part of a published book. Basically, the line is drawn where you try to make (selling copied movies) or save money (burning MP3s) by using other people's intellectual work.
I found this information at a site talking about the copyright changes. In 1998 the law was was changed so that the object copyrighted lasts the duration of the creator's life plus another 70 years.
In Public Domain (no term)
28 years & option renewal for additional 47 years (recently extended to
28 years with new automatic extension to 67 years.
More information available at http://www.unc.edu/~unclng/public-d.htm
Depends on what you are trying to protect. For intellectual creations copyright protection is assumed... This holds true even if they do not have a copyright notice on the piece of material under discretion. This is great for the internet, so you don't have to put a copyright all over the place. However, it is a good practice doing so anyway.
I don't think it needs to be extended any more... From the consumer point, having one person control a given image or technology can produce a monopoly. However, with a given image or trademark, I think that should be able to be copyrighted as long as the company exists.
I came across a ton of information, but the best sites I saw were:
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