I have recently been wondering about this subject. Is it plagarism to share your knowledge about something you do, then have that person use it, and after claim in the broader world and in news media that it was their process? Or is it being happy that your idea and process was used by another to further photography? Is it doing similar work, IE if you were a landscape photographer, and having someone else claim you plargarized their photo by shooting a scene that was also landscape? It is a broad subject, and one I have no real answer to. As photographers I would like your input. What is really photographic plagarism? If there is real plagarism being done, what do we do about it? Do we expose the person(s) or do we just sit back and let it happen?