Visit
WIPOs web site for more information or download the
WIPO copyright treaty itself.
Copyright lasts for a very long time after a photograph was created. There is almost no such thing as a picture in the public domain. Although thousands of pictures are posted in the newsgroups every day and more thousands appear on web sites (often after having been harvested from the newsgroups) most of them are not posted or displayed by the copyright owner and are therefore illegally-displayed.
Some copyright owners are actually quite happy to see their pictures being posted. Others are not. World-wide, there must be a very small number of people indeed who truly earn their living exclusively from their art. David is one of them. Truth be known, most artists are probably tickled pink when someone downloads their work, posts it in the newsgroups, trades it or modifies it and uses it somewhere else. Its a sign that hes made it, an indication that someone else likes his work.
But the fact is, professional artists have quite different considerations. In the nineties, David was sinned against on the internet probably more than all other professional artists combined. Instead of being heavy-handed, we worked to secure a voluntary agreement from his fans not to pirate and, these days, all is calm on that front.