Is there a list of known photo printing services that utilize the Flickr API so that images can be grabbed from your existing Flickr account rather than you having to create a separate account and re-uploading all of your images to the print-service's own web site?
Flickr endorses SnapFish, which people seem to find not the greatest option. However, I recently learned that there are services that will grab your images directly off of Flickr for you using the Flickr API. This is great, as it means I can keep my images in one spot. Apparently Adorama is one of these services. Is there a list of other options out there anywhere? I'd love to be able to try a few of them out.
A bonus would be if said site also would accept photos being uploaded/submitted from an iOS app.
A super extra special bonus would be if said iOS app could also have the print site grab files directly from Flickr.
The end result is being able to have a central repository (flickr) but easily get prints made without having to manually replicate the repository that I have taken the time to set up on flickr.