As per the user agreement agreed to during forum registration and the
forum rules, forum users must respect copyright holders in regard to posting copyrighted materials.
Copyrighted pictures may not be posted without the express consent of the copyright holder.
Short excerpts (a few sentences) of written copyrighted material may be posted along with proper attribution of the source and, in the case of online content, a link to the original.
Copyright holders may post their own works as they please provided that they do not violate any other forum rules or terms of use.
For further study:
Copyright law of the United StatesPublic DomainFair UseCopyright status of work by the U.S. government