I always liked what our Bhikkhu Samahita wrote at one of his websites:
THE DHAMMA IS FREE. THE BUDDHA DID NOT HOLD COPY RIGHTS EITHER.
THE SHARING OF THE BUDDHA DHAMMA IS SOLELY FOR THE PURPOSE
OF PROLONGING THE BUDDHASASANA THROUGH RELEASE.
This site does not commercialize nor restrict the sharing of Dhamma materials.
However, if this sharing does contravene any existing laws then these materials will be removed unconditionally.http://www.what-buddha-taught.net/copy_right_issues.htm
But that of course does not mean that people should go against an author's wishes or rights and that is why Bhante Samahita put that last sentence.