Hi,

let’s say I have one jumble of photos – from many sources, thrown into one folder. Can Digikam based on EXIF data metadata create e.g the following folder structure on disk: [year]/[month] ?
e.g: 2008/september, 2010/march

Doing it by hand seems a little daunting. :)

Not currently but such tool is needed. Currently only from camera/card reader importer supports that function.

The old "fix" is to use scripts from command line to do that for you:

As example only: http://mikebeach.org/2011/12/10/bash-sc ... ntu-linux/

you can try to search that kind scripts what would be easier to modify or already do what is needed, backup your photos and then run the script (first on test setup).

Yes. Other photo managers do a much better job with folders than DigiKam. I put in a request. See below. Please go there and add any comments, preferences or refinements.
Feature Request 3610922 http://sourceforge.net/tracker/?func=detail&aid=3610922&group_id=42641&atid=433763

DigiKam can create one level of data folders at import. So if you are careful when doing a camera import you can just about manage the day dates. You have to do the months manually.
You can view your mixed structure using the Calendar view. It would be good to use this to separate them into folders.

I suggest you to add your wish as bug report to BKO https://bugs.kde.org/ where you get digiKam listen and then it goes to developers.

Thanks. This request appears in the bug list twice.
298035 https://bugs.kde.org/show_bug.cgi?id=298035
294602 https://bugs.kde.org/show_bug.cgi?id=294602

Go there and vote for these bugs if you, like me need this feature.