On Tue, Jan 3, 2012 at 11:49 PM, K. Peachey p858snake@gmail.com wrote:
I'm pretty sure we can't assume anything with licensing, The uploader must state the license they want it to be under.
If something is uploaded by a WMF employee or contractor and was produced in the course of their work for WMF, you can probably safely assume it's CC-BY-SA 3.0+, because it's down in our contracts (or at least mine) that "publicly shared content will be licensed under an applicable free content license, typically CC-BY-SA 3.0 or later". Also, some people (like Tim Starling) have a user page with a blanket statement that anything they publish with no explicit licensing information is licensed under XYZ.
But it probably doesn't hurt to ask people. As for me, everything I may have uploaded to mw.org without licensing information is hereby licensed under CC-BY-SA 3.0+ .
Roan