Seriously, I was extremely skeptical, but then I did some research on it and it is totally legit. All you have to do is complete one of the offers and then have five friends complete an offer. You can totally sign up for the offers with free trial periods and then just cancel after the trial period. When signing up, if you get a survey thing, just keep hitting no through it, those are not the offers.
Use this link to get to the site....
http://www.freeiPods.com/?r=8958617
here is an article on the site from Wired magazine...
http://www.wired.com/news/mac/0,2125,64614,00.html
Seriously everyone...this is awesome and totally for real....the company that runs the site is even part of the BBB