Two words that are rarely used together are "free" and "service", and poor service isn't worth what you paid for it, even if it's free.
Plenty of folks have jumped from Photopoint, and everytime I receive one of their busted links to the new sites, I just chuckle. I wouldn't recommend that you use any of them. I'm sure that other sites will pop up, and that people will get better at using them, but for now, $10 for 1000 pictures is a drop in the bucket to get relatively consistent service.
On a related note, now that the bargain hunters have dropped off, Photopoint seems to really be much faster and more reliable.