I don't have much time to pontificate about this, but I just noticed some more updates on the JibJab issue I wrote about earlier today. Thanks again goes to Lawrence Lessig's blog (via lawrencelessig) for the links.
Lessig's latest blog entry points out a criticism of Lessig's claims that, if accurate, would indicate that the JibJab piece is indeed parody, and thus protected under "fair use" clauses in copyright law. On the other hand, Chris Cohen agrees with Lessig and claims that the piece is satire, which is not protected under "fair use" clauses. There is a lot more interesting information about the legal difference between parody and satire at those links.
Also, JibJab has contacted the EFF for legal help on this issue. Good for them! They point out that Woody Guthrie used the following as his standard copyright notice:
"This song is Copyrighted in U.S., under Seal of Copyright # 154085, for a period of 28 years, and anybody caught singin it without our permission, will be mighty good friends of ourn, cause we don't give a dern. Publish it. Write it. Sing it. Swing to it. Yodel it. We wrote it, that's all we wanted to do."
I really hope JibJab comes through this a winner. Getting the help of the EFF will go a long way to helping them out.