I cam across this site the other day looking for coupons for godaddy, I also found some for cyberpowerpc and many other sites.
It's a great website!
Coupon codes and discounts for 13,000 online stores! RetailMeNot.com
My favorite coupon site! You not only can add your own coupons but you can rate the success rate of other coupons too! I absolutely love this site and I give it a 10 out of 10!
Not really much more I can say lol!