It's pretty neat to hear of these various efforts that have different amounts of integration with commercial services. What would be very nice is to learn if there is any effort to create a web api (soap) to enable client apps to upload/manage photos at a photo serving sites, and to allow photo serving sites to request prints, etc., from the various photo printing sites.
If there is such a standard being developed, our photo albums modules should support them. If there is no such standard being developed, it would be terrific for all parties to get involved and start one.