File:By Tomislav Novacki LAughing Skull.jpg

Artist: Tomislav Novacki

' This image is in no way owned by the poster and is assumed under fair use. '

In US copyright law the doctrine that brief excerpts of copyright material may, under certain circumstances, be quoted verbatim for purposes such as criticism, news reporting, teaching, and research, without the need for permission from or payment to the copyright holder.

Measuring Fair Use: The Four Factors


 * the purpose and character of your use.
 * the nature of the copyrighted work.
 * the amount and substantiality of the portion taken, and.
 * the effect of the use upon the potential market.

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