At 2 am one recent morning, I uploaded an 8x10 family photo and a few 5x7's to a drugstore chain's web site. At 7 am they emailed to say the photos had come out of the printer at the local store. By 9 am, lo and behold, there they were.

They should take it to the next logical step: just let users print to the big machine as if it were a local photo printer. It should be: File / Print to > My local drugstore.