"[M]ore likely, the Supreme Court will eventually choose to take this question on directly to clarify the line between fair use and the derivative work right ..."

"... a line which, for now at least, appears precariously subject to the whims of whichever court is tasked to draw it."

Speaking of appropriation and fair use, Steven Schindler and Katherine Wilson-Milne had a piece in the New York Law Journal last week on the Kienitz decision.