> Does this mean
> that even posting a picture of the art piece
> on the web could be in violation of
> someone's rights?

Yes. And in fact, you may NOT be doing the artist a favor, since you're enabling other folks to use the art. Not all countries agreed to the international copyrights treaties, so it's easy for someone in China to take what you post, print and use it in a book, and sell the book. The artist can't fight that.

I know of one artist who had his work posted with no credits on the net by a fan. The artist's work was used in a book printed here in America -- no credit, no payment, and he couldn't prove the work was his. Another had their work distributed as "free art" and THAT art ended up on a Corel clip art disk.

> Does anyone know where I
> can get additional information on these
> "rights"? (Especially digital
> rights)!

Here ya go:
http://www.rexx.com/~jaguar/copyright.html