The matter of copyright is crucial. It is not clear, that we do know when we deal in the elcetronic media. It is not clear because distribution on the WWW is fast and without boundries. By the nature of being on the web it is shareable. Take for example a newspaper. It is shared: one reads it discards it and someone else picks it up to read it. By copyright laws only the purchaser of that paper is to be the reader, and yet that paper is shared. Fair Use allows for educational uses, which are also unclear. Take the Kinko's case of the of 1991 and of 1996.

Links to copyright sites

A must read would be Mike Godwin's Cyber Rights