CVS has an offer right now where you can get 20 Free Prints when you open an account and 30 more when you add your ExtraCare card number to your account. You will receive an email with a link to activate your free prints.
You can also get a free 8X10 enlargement when you enter the promotional code FREE8X10 at check-out. You can upload your photo online and pick it up in the store a few hours later.
I just picked up my free 8×10 yesterday, along with my other weekly deals. I didn't know about the 50 free prints, I'll have to try that one next!
I did this last week and was really happy with the quality of my 8×10!