PowerSox is giving away a free pair of socks for the first 30,000 people to sign up! I'm not sure when this opened up, but I just got mine (at 3:30 pm) so they are still available for now. But the site is running a little slow because of volume. So, if you have a few minutes to wait, click here to get a free pair of running socks in 6-8 weeks!
(Thanks, Coupon Pro)