http://webcentresurf.com/?221 i am getting alot of referrals and you can do the same so sign up and they have a contest....
Weekly surf contest : 1st prize: $5.00
2nd prize: a Student upgrade (value $5.00) for the best Free Surfer each week.
(1st and 2nd prize can only be won by the same member once every 5 weeks)
All other Top Surfers will receive Bonus Credits.