Copyright Confusion: Myths and Facts

Your Task.
You overheard the following statements as a group of college students discussed copyright issues. Which of these statements do you think are true and which are false?
a. If it doesn’t have a copyright notice, it’s not copyrighted.
b. If I don’t charge for it, it’s not a violation.
c. If it’s posted to Usenet, it’s in the public domain.
d. My posting was just fair use.
e. If you don’t defend your copyright, you lose it.
f. If I make up my own stories, but base them on another work, my new work belongs to me.
g. They can’t get me; defendants in court have powerful rights!
h. Copyright violation isn’t a crime or anything, is it?
i. It doesn’t hurt anybody. In fact, it’s free advertising.
j. They e-mailed me a copy, so I can post it.