Question : Protect Document

I want to sell a document in the internet, is there any solution to protect my document from Printing or Copyright?
couple of months ago I bought a document from a website, the website used a program to install a PDF file on my computer and I could view the PDF file, but I coulný copy the file to other computer or give it to anyone else, is there any idea how can I do that?

Answer : Protect Document

Use a PDF writing application to create a protected PDF, for example PPF995 with which you can get the signature application to protect PDF's

http://www.pdf995.com/why.html

Chris