GOOD readers, our friends at Design 21's Social Design Network (read about them here) want to pose a challenge to you. They want to know how you define social design. It's very simple and very broad. Let us know what you think in the comments. The first 25 commenters will get a GOOD t-shirt and a stainless steel Allumonde ring from Design 21. Make sure you've included your real email with your GOOD profile, or we won't be able to contact you to give you your prize.