I discovered this web site in my search for copyright information regarding art work. The text below is from the FAQ page of the R.I.G.H.T.S. site:
“What does R.I.G.H.T.S. stand for?
Redistribution In Graphics Has To Stop.
In its early stages, R.I.G.H.T.S. primarily was designed as a basic primer for copyright issues regarding the unauthorized use, theft of, or redistribution of graphics. However, now in its fourth year online, R.I.G.H.T.S. has made every attempt to address other protected intellectual property and the respective copyright issues addressing text, music, fonts, brushes, etc.
What is R.I.G.H.T.S.?
It is a collective stand that copyright owners throughout the internet must take in an effort to establish a clear, concise and direct global understanding that unauthorized redistribution of copyrighted property is illegal.
R.I.G.H.T.S. does not advocate the reactive process of “seeking or searching out” redistributed material; instead we promote a more proactive approach of educating the potential violator BEFORE the infringement occurs.”