Hi,
I've run into a problem. Currently, downloaded images (type: Image) are tagged in the same vocabulary as the content node (type: Feed Item). However, for me, the vocabulary doesn't allow content type 'Image' to be used (i.e., in admin/content/taxonomy/edit/vocabulary/2 'Image' is not checked). As a result, when viewing the download image (type: Image) a taxonomy term is shown, but disappears in edit tab.
Also, it would be nice if another vocabulary can be used for downloaded images.