Yeah, basically I can use a program on my KDE desktop to title, caption, rotate and tag all of my photos, and then export everything at once to any site using Gallery2 (or for that matter to Flickr). I'd like to be able to do the same thing here (tag once, post everwhere :) ).

Of course the image streams from Flicr solves this problem for me. I should have read your original post more closely I guess.

-mark