DigiKam 3.0.0 is getting closer. The developer has released their first and probably last RC release before shipping the final version which should be out along with KDE 4.10 release date next month.
One note about the RC release is that the Kipi-Plugins export menu is now working again after it has been disabled since last previous beta releases (it was greyed and unusable).
I have been using digiKam to export photos on my Facebook account and it can process bulk of images, so i don't have to pick them one by one. I can leave them while i was sleeping at night and in the morning it should be completed.
I managed to build digiKam 3.0.0-rc on Slackware-Current and using KDE 4.9.5, thanks to Eric Hameleers. While it's already proven to be working on my machine, i don't intend to push the changes into my SlackHacks repository until the final version shipped, so please be patient. The current stable version (2.9.0) is more than enough if you only need their basic features.