Haukur Þorgeirsson wrote:
That's exactly as I feared then - GFDL isn't a very suitable license to make free images with. And someone who wanted to make a postcard series out of the featured pictures would indeed have problems since many of them are only licensed under the GFDL.
This is a problem and we need to address it.
It is being addressed at the level of the license itself in a forthcoming update to the license.
--Jimbo