doc sharing

If I want to add links for diversity from multiple doc/audio websites, do I need to make unique content for every site or can I use the same video/audio? Or how do you do?

OK. So I thought I'd get a few backlinks from document sharing and I have one question. I created my pdf with a clickable link and it is clickable in Scribd. I checked the source of the page and nowhere does the link show up in the HTML. I'm guessing it comes up via some javascript. If the...