Flickr has finally begun to offer online printing of photo’s (if you’re in the U.S.). They have a FAQ up, and prices appear to start at $0.20 for 4×6 and go up from there, so it’s competitive. Looking at the Flickr Blog, I see they’re also available for in-store pickup at Target. Very smart.
What’s interesting, is you, as the photo owner, can limit who can order prints from your photo’s. I never thought of that – I would have assumed it was just for the user, but when combined with a copyleft model, that’s pretty darn cool.