I have just started using photoreflect.com for my online digital proofing.
Some user interface issues... but all in all... it seems that this site has a lot of potential for today's digital photographer. They host your proofs for as long as you want at no charge. They take 15% of your total sales... but they take and process your credit card payments. They have templates for Art Leather albums. They also can send your orders directly to your chosen photo lab so you don't have to!
I was playing around with the
portfolio section today. What do you think?