Crocs.com give 20% off your next purchase when you sign up to their email.
http://www.crocs.com/on/demandware.store/Sites-crocs_us-Site/default/Newsletter-SubscribeIt says comes within 24hrs, but mine came after a few min.
This coupon stacks with their free shipping and other discount codes they quite often offer. Found an expired one in my inbox and was still able to apply it.
My technique with this is whenever i make an order, i resign up with a new address to have a coupon ready for my next order.
Not sure if this deserves its own thread, but wasn't able to find a coupon/discount master thread.
