According to deviantART $taff, you are NOT protected by the DMCA. Users are allowed to use your work without following your rules - that includes credit and notification. They will not remove your work for
"perceived violation of your terms of use for the material which you made available in a gallery area devoted for use by other creative individuals." According this statement, since we have offered our work as stock, we are giving up any copyright protection.
This is why I am done. This is why I will no longer offer stock on this site. If you have downloaded my stock, DO NOT USE IT. Any and all works posted on or before 08/19/2013 are safe and permitted - so long as they adhere to my rules. No further use of my stock will be allowed. I will report any other works after this date. I apologize, but I cannot deal with this stance. I am done.
I appreciate each and every person who has legitimately used my stock - it has been an honor to be a part of your creative process, it truly has.
To those who would use stock without following the rules of each stock artist, go copulate yourselves with a broken broom handle.
Update: The offending work has finally been removed - thank you, $taff.
I am hoping that this mess will bring about a conversation amongst the CEA team, that will lead to a clear, well-advertised method for stock providers to use when they find their rules being violated. There is currently no option under the reporting options, nor can we use the Intellectual Property (DMCA) route.