http://www.self.com/challenge/services/contests
email from Self Magazine:
Sign up to join the 2008 Self Challenge on May 9th and you'll automatically receive a COMPLIMENTARY pair of Asics athletic socks, a $12 value, just for registering!
As an added bonus, you'll also be automatically entered to win one of $23,000 worth of prizes, including daily gift cards from Moving Comfort, or a spa trip to Mexico!