Here's how you get 20 (4x6) prints totally free:
1. Create a new account with Clark Color Labs at their website and you should get 20 free print credits.
2. Upload and order 20 photos.
3. At checkout, you DO have to enter your credit card information, but down at the bottom of the screen there is a place to enter a coupon code. Right now Clark Color Labs is offering free shipping on up to 25 prints (can only use coupon 1 time, expires 4/15/07). Just enter CJLFREESHIP.
4. Continue to the next page and you should see that both your prints and shipping are free - $0.00 total