This article describes how to earn rewards on the Internet with referral marketing. You refer people to the free site to try out offers and they will reward you with gifts since they get commission from the offers you try.

Google whatever item you want for free (ie "free iPod, Xbox360, PS3").
Find the site, and search and find out if the site is legit. Sites such as Freepay are legit sites. *NOTE* Freepay has grown considerably larger throughout the years and they have a large amount of users, meaning they have more people to serve. They now take a little longer to get you your gift since they have so many people to send gifts to. The external link shows some of the faster legitimate sites out there if you need more references.

After you sign up to the site, you have to complete one easy offer. They are quite simple and easy to complete. Most of the offers cool are ones such as Blockbuster or RealRhapsody. A lot of them are very useful.
After you do your offer, just refer a few friends to sign up as well. After that, just request for approval and they will soon approve your account and send you your gift.

Tips

These sites get their money from you doing an offer such as Blockbuster. Blockbuster pays the free site and they get money from you and your referrals. They then send you a gift and keep the rest of the money.

Warnings

Remember, the offers that you do may cost money(around $5-$10 on average) and it may not be completely free. However, there are some offers that are completely free.
Never sign up under yourself as a referral, this is considered cheating and they won't send you a gift if you do.
Freepay has gone down the hill lately and they are really slow. This is due to a high amount of users, they have a lot more people to serve now. There are many other networks out there that are faster than Freepay.
When you do your offer, make sure you know the details of it and be sure to cancel if you don't like the offer. If you forget to cancel, you may get charged for something you don't want. Don't plan on signing up and cancelling though. Be sure to give the offer a try and give it a fair shot. It hurts these sites when you just sign up and cancel not even wanting to give the product a try.

When you sign up, using an email address just created for free sites and offers is recommended. Some free sites may sell your email even though they say that they won't. Most free sites won't do such a thing though. When you have your own email specifically for free sites and offers, you can keep track of what offers you did and such (since the offers send you confirmation emails).