Correction: Flickr did open to Zooomr. (Score 5, Informative)

Flickr offers its corporate API to some sites, and refuses to permit it to others. Zooomr was judged to be too much of a potential competitor, so Zooomr users don't get to copy the photos they've uploaded to Flickr.

Flickr ended up, after some rough comments and self-reflection, changing their minds (see the "Update:" at the bottom of the post).