Just found an interesting site where you can win a gaming consoles, mobile phone or an mp3 player like playstaion3, N80 or an ipod respectively for free just follow this steps:
1. Register into this http://www.xpango.com?ref=91328963 and the referral ID should be 91328963
2. Select a gift to receive your referral ID
3. Get credits by referring a friend.
After you sign up check your email regularly to activate referrals. Good luck!