Free stuff?

I found this freebie website called ***NO REFERAL LINKS*** You can get "swagbucks"(currency) every time you search the web(it's the same as using Google). There are a ton of prizes, such as a PS3, Xbox 360, Wii, iPhone 3Gs,
and more. All you need is your shipping info, not your credit card. You can also get gift certificates or gift cards, such as for Amazon, Paypal, and iTunes. I recently redeemed a $5 Amazon gift certificate for FREE(meaning not with U.S currency). I just wanted to make sure this was scam-free. You won't be earning swagbucks every time you search, it will just be one of those every now and then things.

Moderator Edit:
Don't post referral links.